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299 vulnerabilities found for OpenSSH by OpenBSD
CVE-2021-41617 (GCVE-0-2021-41617)
Vulnerability from cvelistv5 – Published: 2021-09-26 00:00 – Updated: 2026-09-08 08:30
VLAI
EPSS
VEX
Summary
sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
16 references
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
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CVE-2016-20012 (GCVE-0-2016-20012)
Vulnerability from cvelistv5 – Published: 2021-09-15 19:32 – Updated: 2026-05-29 15:38 Disputed
VLAI
EPSS
VEX
Summary
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 15:38 UTC
CWE
- n/a
- CWE-203 - Observable Discrepancy
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/openssh/openssh-portable/pull/270 | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/blob/… | x_refsource_MISC |
| https://utcc.utoronto.ca/~cks/space/blog/tech/SSH… | x_refsource_MISC |
| https://rushter.com/blog/public-ssh-keys/ | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021101… | x_refsource_CONFIRM |
| https://github.com/openssh/openssh-portable/pull/… | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2018/… | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/pull/… | x_refsource_MISC |
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CVE-2021-28041 (GCVE-0-2021-28041)
Vulnerability from cvelistv5 – Published: 2021-03-05 19:07 – Updated: 2024-08-03 21:33
VLAI
EPSS
VEX
Summary
ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://www.openssh.com/security.html | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/commi… | x_refsource_MISC |
| https://www.openssh.com/txt/release-8.5 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.gentoo.org/glsa/202105-35 | vendor-advisoryx_refsource_GENTOO |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.oracle.com//security-alerts/cpujul2021.html | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021041… | x_refsource_CONFIRM |
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CVE-2020-15778 (GCVE-0-2020-15778)
Vulnerability from cvelistv5 – Published: 2020-07-24 00:00 – Updated: 2024-08-04 13:22 Disputed
VLAI
EPSS
VEX
Summary
scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows."
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-01 14:59 UTC
CWE
- n/a
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
6 references
Impacted products
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CVE-2020-14145 (GCVE-0-2020-14145)
Vulnerability from cvelistv5 – Published: 2020-06-29 17:33 – Updated: 2025-12-18 14:41
VLAI
EPSS
VEX
Summary
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:41 UTC
CWE
- n/a
- CWE-203 - Observable Discrepancy
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/openssh/openssh-portable/compa… | x_refsource_MISC |
| https://www.fzi.de/en/news/news/detail-en/artikel… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2020070… | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2020/12/02/1 | mailing-listx_refsource_MLIST |
| https://anongit.mindrot.org/openssh.git/commit/?i… | x_refsource_MISC |
| https://docs.ssh-mitm.at/CVE-2020-14145.html | x_refsource_MISC |
| https://github.com/ssh-mitm/ssh-mitm/blob/master/… | x_refsource_MISC |
| https://security.gentoo.org/glsa/202105-35 | vendor-advisoryx_refsource_GENTOO |
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CVE-2020-12062 (GCVE-0-2020-12062)
Vulnerability from cvelistv5 – Published: 2020-06-01 15:28 – Updated: 2024-08-04 11:48 Disputed
VLAI
EPSS
VEX
Summary
The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
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|---|---|
| https://www.openwall.com/lists/oss-security/2020/… | x_refsource_MISC |
| https://www.openssh.com/txt/release-8.3 | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/commi… | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/commi… | x_refsource_MISC |
Date Public
2020-05-27 00:00
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CVE-2019-16905 (GCVE-0-2019-16905)
Vulnerability from cvelistv5 – Published: 2019-10-09 00:00 – Updated: 2025-04-23 15:45
VLAI
EPSS
VEX
Summary
OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
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CVE-2019-6111 (GCVE-0-2019-6111)
Vulnerability from cvelistv5 – Published: 2019-01-31 00:00 – Updated: 2025-12-18 14:35
VLAI
EPSS
VEX
Summary
An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:34 UTC
CWE
- n/a
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
23 references
Date Public
2019-01-31 00:00
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CVE-2019-6109 (GCVE-0-2019-6109)
Vulnerability from cvelistv5 – Published: 2019-01-31 00:00 – Updated: 2026-05-28 18:13
VLAI
EPSS
VEX
Summary
An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 18:13 UTC
CWE
- n/a
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
13 references
Date Public
2019-01-31 00:00
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CVE-2019-6110 (GCVE-0-2019-6110)
Vulnerability from cvelistv5 – Published: 2019-01-31 00:00 – Updated: 2025-12-18 14:32
VLAI
EPSS
VEX
Summary
In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.
Severity
6.8 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:32 UTC
CWE
- n/a
- CWE-838 - Inappropriate Encoding for Output Context
Assigner
References
7 references
Date Public
2019-01-31 00:00
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CVE-2018-20685 (GCVE-0-2018-20685)
Vulnerability from cvelistv5 – Published: 2019-01-10 00:00 – Updated: 2025-12-17 21:53
VLAI
EPSS
VEX
Summary
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 21:53 UTC
CWE
- n/a
- CWE-863 - Incorrect Authorization
Assigner
References
14 references
Date Public
2019-01-10 00:00
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CVE-2018-15919 (GCVE-0-2018-15919)
Vulnerability from cvelistv5 – Published: 2018-08-28 08:00 – Updated: 2025-12-18 11:48
VLAI
EPSS
VEX
Summary
Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 11:48 UTC
CWE
- n/a
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
3 references
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|---|---|
| https://security.netapp.com/advisory/ntap-2018122… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/105163 | vdb-entryx_refsource_BID |
| http://seclists.org/oss-sec/2018/q3/180 | x_refsource_MISC |
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CVE-2018-15473 (GCVE-0-2018-15473)
Vulnerability from cvelistv5 – Published: 2018-08-17 00:00 – Updated: 2025-12-17 21:22
VLAI
EPSS
VEX
Summary
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 21:22 UTC
CWE
- n/a
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
18 references
Date Public
2018-08-17 00:00
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CVE-2016-10708 (GCVE-0-2016-10708)
Vulnerability from cvelistv5 – Published: 2018-01-21 22:00 – Updated: 2026-04-29 14:33
VLAI
EPSS
VEX
Summary
sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-28 15:50 UTC
CWE
- n/a
- CWE-476 - NULL Pointer Dereference
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://www.openssh.com/releasenotes.html | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2018042… | x_refsource_CONFIRM |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| https://anongit.mindrot.org/openssh.git/commit/?i… | x_refsource_MISC |
| https://usn.ubuntu.com/3809-1/ | vendor-advisoryx_refsource_UBUNTU |
| http://www.securityfocus.com/bid/102780 | vdb-entryx_refsource_BID |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| http://blog.swiecki.net/2018/01/fuzzing-tcp-serve… | x_refsource_MISC |
| https://kc.mcafee.com/corporate/index?page=conten… | x_refsource_CONFIRM |
| https://support.f5.com/csp/article/K32485746?utm_… | x_refsource_CONFIRM |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
Date Public
2018-01-21 00:00
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CVE-2017-15906 (GCVE-0-2017-15906)
Vulnerability from cvelistv5 – Published: 2017-10-26 00:00 – Updated: 2026-05-28 17:56
VLAI
EPSS
VEX
Summary
The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 17:55 UTC
CWE
- n/a
- CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
9 references
Date Public
2017-10-25 00:00
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CVE-2016-20012 (GCVE-0-2016-20012)
Vulnerability from nvd – Published: 2021-09-15 19:32 – Updated: 2026-05-29 15:38 Disputed
VLAI
EPSS
VEX
Summary
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 15:38 UTC
CWE
- n/a
- CWE-203 - Observable Discrepancy
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/openssh/openssh-portable/pull/270 | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/blob/… | x_refsource_MISC |
| https://utcc.utoronto.ca/~cks/space/blog/tech/SSH… | x_refsource_MISC |
| https://rushter.com/blog/public-ssh-keys/ | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021101… | x_refsource_CONFIRM |
| https://github.com/openssh/openssh-portable/pull/… | x_refsource_MISC |
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CVE-2021-28041 (GCVE-0-2021-28041)
Vulnerability from nvd – Published: 2021-03-05 19:07 – Updated: 2024-08-03 21:33
VLAI
EPSS
VEX
Summary
ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
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|---|---|
| https://www.openssh.com/security.html | x_refsource_MISC |
| https://www.openwall.com/lists/oss-security/2021/… | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/commi… | x_refsource_MISC |
| https://www.openssh.com/txt/release-8.5 | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.gentoo.org/glsa/202105-35 | vendor-advisoryx_refsource_GENTOO |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://www.oracle.com//security-alerts/cpujul2021.html | x_refsource_MISC |
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CVE-2020-15778 (GCVE-0-2020-15778)
Vulnerability from nvd – Published: 2020-07-24 00:00 – Updated: 2024-08-04 13:22 Disputed
VLAI
EPSS
VEX
Summary
scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows."
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-01 14:59 UTC
CWE
- n/a
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
6 references
Impacted products
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CVE-2020-14145 (GCVE-0-2020-14145)
Vulnerability from nvd – Published: 2020-06-29 17:33 – Updated: 2025-12-18 14:41
VLAI
EPSS
VEX
Summary
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:41 UTC
CWE
- n/a
- CWE-203 - Observable Discrepancy
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/openssh/openssh-portable/compa… | x_refsource_MISC |
| https://www.fzi.de/en/news/news/detail-en/artikel… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2020070… | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2020/12/02/1 | mailing-listx_refsource_MLIST |
| https://anongit.mindrot.org/openssh.git/commit/?i… | x_refsource_MISC |
| https://docs.ssh-mitm.at/CVE-2020-14145.html | x_refsource_MISC |
| https://github.com/ssh-mitm/ssh-mitm/blob/master/… | x_refsource_MISC |
| https://security.gentoo.org/glsa/202105-35 | vendor-advisoryx_refsource_GENTOO |
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CVE-2020-12062 (GCVE-0-2020-12062)
Vulnerability from nvd – Published: 2020-06-01 15:28 – Updated: 2024-08-04 11:48 Disputed
VLAI
EPSS
VEX
Summary
The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory anywhere on the remote server. The victim must use the command scp -rp to download a file hierarchy containing, anywhere inside, this crafted subdirectory. NOTE: the vendor points out that "this attack can achieve no more than a hostile peer is already able to achieve within the scp protocol" and "utimes does not fail under normal circumstances.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2020/… | x_refsource_MISC |
| https://www.openssh.com/txt/release-8.3 | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/commi… | x_refsource_MISC |
| https://github.com/openssh/openssh-portable/commi… | x_refsource_MISC |
Date Public
2020-05-27 00:00
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CVE-2019-16905 (GCVE-0-2019-16905)
Vulnerability from nvd – Published: 2019-10-09 00:00 – Updated: 2025-04-23 15:45
VLAI
EPSS
VEX
Summary
OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
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CVE-2019-6109 (GCVE-0-2019-6109)
Vulnerability from nvd – Published: 2019-01-31 00:00 – Updated: 2026-05-28 18:13
VLAI
EPSS
VEX
Summary
An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 18:13 UTC
CWE
- n/a
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
13 references
Date Public
2019-01-31 00:00
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CVE-2019-6111 (GCVE-0-2019-6111)
Vulnerability from nvd – Published: 2019-01-31 00:00 – Updated: 2025-12-18 14:35
VLAI
EPSS
VEX
Summary
An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:34 UTC
CWE
- n/a
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
23 references
Date Public
2019-01-31 00:00
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CVE-2019-6110 (GCVE-0-2019-6110)
Vulnerability from nvd – Published: 2019-01-31 00:00 – Updated: 2025-12-18 14:32
VLAI
EPSS
VEX
Summary
In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.
Severity
6.8 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:32 UTC
CWE
- n/a
- CWE-838 - Inappropriate Encoding for Output Context
Assigner
References
7 references
Date Public
2019-01-31 00:00
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CVE-2018-20685 (GCVE-0-2018-20685)
Vulnerability from nvd – Published: 2019-01-10 00:00 – Updated: 2025-12-17 21:53
VLAI
EPSS
VEX
Summary
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 21:53 UTC
CWE
- n/a
- CWE-863 - Incorrect Authorization
Assigner
References
14 references
Date Public
2019-01-10 00:00
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CVE-2018-15919 (GCVE-0-2018-15919)
Vulnerability from nvd – Published: 2018-08-28 08:00 – Updated: 2025-12-18 11:48
VLAI
EPSS
VEX
Summary
Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 11:48 UTC
CWE
- n/a
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://security.netapp.com/advisory/ntap-2018122… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/105163 | vdb-entryx_refsource_BID |
| http://seclists.org/oss-sec/2018/q3/180 | x_refsource_MISC |
Date Public
2018-08-28 00:00
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CVE-2018-15473 (GCVE-0-2018-15473)
Vulnerability from nvd – Published: 2018-08-17 00:00 – Updated: 2025-12-17 21:22
VLAI
EPSS
VEX
Summary
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 21:22 UTC
CWE
- n/a
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
18 references
Date Public
2018-08-17 00:00
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CVE-2016-10708 (GCVE-0-2016-10708)
Vulnerability from nvd – Published: 2018-01-21 22:00 – Updated: 2026-04-29 14:33
VLAI
EPSS
VEX
Summary
sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-28 15:50 UTC
CWE
- n/a
- CWE-476 - NULL Pointer Dereference
Assigner
References
11 references
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|---|---|
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| https://anongit.mindrot.org/openssh.git/commit/?i… | x_refsource_MISC |
| https://usn.ubuntu.com/3809-1/ | vendor-advisoryx_refsource_UBUNTU |
| http://www.securityfocus.com/bid/102780 | vdb-entryx_refsource_BID |
| https://lists.debian.org/debian-lts-announce/2018… | mailing-listx_refsource_MLIST |
| http://blog.swiecki.net/2018/01/fuzzing-tcp-serve… | x_refsource_MISC |
| https://kc.mcafee.com/corporate/index?page=conten… | x_refsource_CONFIRM |
| https://support.f5.com/csp/article/K32485746?utm_… | x_refsource_CONFIRM |
| https://cert-portal.siemens.com/productcert/pdf/s… | x_refsource_CONFIRM |
Date Public
2018-01-21 00:00
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CVE-2017-15906 (GCVE-0-2017-15906)
Vulnerability from nvd – Published: 2017-10-26 00:00 – Updated: 2026-05-28 17:56
VLAI
EPSS
VEX
Summary
The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 17:55 UTC
CWE
- n/a
- CWE-732 - Incorrect Permission Assignment for Critical Resource
Assigner
References
9 references
Date Public
2017-10-25 00:00
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CVE-2016-1908 (GCVE-0-2016-1908)
Vulnerability from nvd – Published: 2017-04-11 00:00 – Updated: 2026-05-29 20:14
VLAI
EPSS
VEX
Summary
The client in OpenSSH before 7.2 mishandles failed cookie generation for untrusted X11 forwarding and relies on the local X11 server for access-control decisions, which allows remote X11 clients to trigger a fallback and obtain trusted X11 forwarding privileges by leveraging configuration issues on this X11 server, as demonstrated by lack of the SECURITY extension on this X11 server.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 20:14 UTC
CWE
- n/a
- CWE-287 - Improper Authentication
Assigner
References
12 references
Date Public
2016-01-14 00:00
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