Products
1 product registered by OpenSSLRecent vulnerabilities
322 published under the CPE names of this organization's products in cvelistv5CVE-2019-1563 (GCVE-0-2019-1563)
Vulnerability from cvelistv5 – Published: 2019-09-10 16:58 – Updated: 2026-10-08 21:13
VLAI
EPSS
VEX
Title
Padding Oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
Summary
In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:10 UTC
CWE
- Padding Oracle
Assigner
References
30 references
Impacted products
Date Public
2019-09-10 00:00
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CVE-2018-0732 (GCVE-0-2018-0732)
Vulnerability from cvelistv5 – Published: 2018-06-12 13:00 – Updated: 2026-10-08 21:13
VLAI
EPSS
VEX
Title
Client DoS due to large DH parameter
Summary
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:08 UTC
CWE
- Client side Denial of Service
Assigner
References
37 references
Impacted products
Date Public
2018-06-12 00:00
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CVE-2018-0735 (GCVE-0-2018-0735)
Vulnerability from cvelistv5 – Published: 2018-10-29 13:00 – Updated: 2026-10-08 21:13
VLAI
EPSS
VEX
Title
Timing attack against ECDSA signature generation
Summary
The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.1.1a (Affected 1.1.1).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:08 UTC
CWE
- Constant time issue
Assigner
References
15 references
Impacted products
Date Public
2018-10-29 00:00
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CVE-2018-5407 (GCVE-0-2018-5407)
Vulnerability from cvelistv5 – Published: 2018-11-15 21:00 – Updated: 2026-10-08 21:13
VLAI
EPSS
VEX
Summary
Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:07 UTC
CWE
Assigner
References
28 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| N/A | Processors supporting Simultaneous Multi-Threading |
Affected:
N/A
|
Date Public
2018-11-15 00:00
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CVE-2021-3449 (GCVE-0-2021-3449)
Vulnerability from cvelistv5 – Published: 2021-03-25 14:25 – Updated: 2026-10-08 21:13
VLAI
EPSS
VEX
Title
NULL pointer deref in signature_algorithms processing
Summary
An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:05 UTC
CWE
- NULL pointer dereference
Assigner
References
29 references
Impacted products
Date Public
2021-03-25 00:00
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CVE-2019-1551 (GCVE-0-2019-1551)
Vulnerability from cvelistv5 – Published: 2019-12-06 17:20 – Updated: 2026-10-08 21:13
VLAI
EPSS
VEX
Title
rsaz_512_sqr overflow bug on x86_64
Summary
There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:04 UTC
CWE
- Integer overflow bug
Assigner
References
24 references
Impacted products
Date Public
2019-12-06 00:00
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CVE-2018-0734 (GCVE-0-2018-0734)
Vulnerability from cvelistv5 – Published: 2018-10-30 12:00 – Updated: 2026-10-08 21:13
VLAI
EPSS
VEX
Title
Timing attack against DSA
Summary
The OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:03 UTC
CWE
- Constant time issue
Assigner
References
29 references
Impacted products
Date Public
2018-10-30 00:00
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CVE-2021-3450 (GCVE-0-2021-3450)
Vulnerability from cvelistv5 – Published: 2021-03-25 14:25 – Updated: 2026-10-08 21:03
VLAI
EPSS
VEX
Title
CA certificate check bypass with X509_V_FLAG_X509_STRICT
Summary
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 21:02 UTC
CWE
- Invalid Certificate Verification
Assigner
References
24 references
Impacted products
Date Public
2021-03-25 00:00
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CVE-2021-3711 (GCVE-0-2021-3711)
Vulnerability from cvelistv5 – Published: 2021-08-24 14:50 – Updated: 2026-10-08 21:03
VLAI
EPSS
VEX
Title
SM2 Decryption Buffer Overflow
Summary
In order to decrypt SM2 encrypted data an application is expected to call the API function EVP_PKEY_decrypt(). Typically an application will call this function twice. The first time, on entry, the "out" parameter can be NULL and, on exit, the "outlen" parameter is populated with the buffer size required to hold the decrypted plaintext. The application can then allocate a sufficiently sized buffer and call EVP_PKEY_decrypt() again, but this time passing a non-NULL value for the "out" parameter. A bug in the implementation of the SM2 decryption code means that the calculation of the buffer size required to hold the plaintext returned by the first call to EVP_PKEY_decrypt() can be smaller than the actual size required by the second call. This can lead to a buffer overflow when EVP_PKEY_decrypt() is called by the application a second time with a buffer that is too small. A malicious attacker who is able present SM2 content for decryption to an application could cause attacker chosen data to overflow the buffer by up to a maximum of 62 bytes altering the contents of other data held after the buffer, possibly changing application behaviour or causing the application to crash. The location of the buffer is application dependent but is typically heap allocated. Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 20:59 UTC
CWE
- Buffer overflow
Assigner
References
17 references
Impacted products
Date Public
2021-08-24 00:00
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CVE-2020-1967 (GCVE-0-2020-1967)
Vulnerability from cvelistv5 – Published: 2020-04-21 13:45 – Updated: 2026-10-08 21:03
VLAI
EPSS
VEX
Title
Segmentation fault in SSL_check_chain
Summary
Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f).
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 20:59 UTC
CWE
- NULL pointer dereference
Assigner
References
32 references
Impacted products
Date Public
2020-04-21 00:00
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"value": "Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the \"signature_algorithms_cert\" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f)."
}
]
},
"impact": [
{
"lang": "eng",
"url": "https://www.openssl.org/policies/secpolicy.html#High",
"value": "High"
}
],
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "NULL pointer dereference"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "FreeBSD-SA-20:11",
"refsource": "FREEBSD",
"url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:11.openssl.asc"
},
{
"name": "DSA-4661",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2020/dsa-4661"
},
{
"name": "[oss-security] 20200422 [CVE-2020-1967] OpenSSL 1.1.1d+ Segmentation fault in SSL_check_chain",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/04/22/2"
},
{
"name": "[tomcat-dev] 20200422 Time for Tomcat Native 1.2.24?",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r9a41e304992ce6aec6585a87842b4f2e692604f5c892c37e3b0587ee@%3Cdev.tomcat.apache.org%3E"
},
{
"name": "[tomcat-dev] 20200422 Re: Time for Tomcat Native 1.2.24?",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r66ea9c436da150683432db5fbc8beb8ae01886c6459ac30c2cea7345@%3Cdev.tomcat.apache.org%3E"
},
{
"name": "[tomcat-dev] 20200423 Re: Time for Tomcat Native 1.2.24?",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r94d6ac3f010a38fccf4f432b12180a13fa1cf303559bd805648c9064@%3Cdev.tomcat.apache.org%3E"
},
{
"name": "GLSA-202004-10",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202004-10"
},
{
"name": "FEDORA-2020-fcc91a28e8",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XVEP3LAK4JSPRXFO4QF4GG2IVXADV3SO/"
},
{
"name": "FEDORA-2020-da2d1ef2d7",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DDHOAATPWJCXRNFMJ2SASDBBNU5RJONY/"
},
{
"name": "20200501 CVE-2020-1967: proving sigalg != NULL",
"refsource": "FULLDISC",
"url": "http://seclists.org/fulldisclosure/2020/May/5"
},
{
"name": "FEDORA-2020-d7b29838f6",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EXDDAOWSAIEFQNBHWYE6PPYFV4QXGMCD/"
},
{
"name": "openSUSE-SU-2020:0933",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00004.html"
},
{
"name": "openSUSE-SU-2020:0945",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00011.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpujul2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujul2020.html"
},
{
"name": "https://www.tenable.com/security/tns-2020-03",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2020-03"
},
{
"name": "https://www.openssl.org/news/secadv/20200421.txt",
"refsource": "CONFIRM",
"url": "https://www.openssl.org/news/secadv/20200421.txt"
},
{
"name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=eb563247aef3e83dda7679c43f9649270462e5b1",
"refsource": "CONFIRM",
"url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=eb563247aef3e83dda7679c43f9649270462e5b1"
},
{
"name": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440",
"refsource": "CONFIRM",
"url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44440"
},
{
"name": "https://security.netapp.com/advisory/ntap-20200424-0003/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20200424-0003/"
},
{
"name": "https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL",
"refsource": "CONFIRM",
"url": "https://www.synology.com/security/advisory/Synology_SA_20_05_OpenSSL"
},
{
"name": "https://github.com/irsl/CVE-2020-1967",
"refsource": "MISC",
"url": "https://github.com/irsl/CVE-2020-1967"
},
{
"name": "http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/157527/OpenSSL-signature_algorithms_cert-Denial-Of-Service.html"
},
{
"name": "https://www.synology.com/security/advisory/Synology_SA_20_05",
"refsource": "CONFIRM",
"url": "https://www.synology.com/security/advisory/Synology_SA_20_05"
},
{
"name": "https://www.tenable.com/security/tns-2020-04",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2020-04"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
},
{
"name": "https://security.netapp.com/advisory/ntap-20200717-0004/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20200717-0004/"
},
{
"name": "https://www.oracle.com/security-alerts/cpujan2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpujan2021.html"
},
{
"name": "https://www.tenable.com/security/tns-2020-11",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2020-11"
},
{
"name": "https://www.oracle.com/security-alerts/cpuApr2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
},
{
"name": "https://www.tenable.com/security/tns-2021-10",
"refsource": "CONFIRM",
"url": "https://www.tenable.com/security/tns-2021-10"
},
{
"name": "https://www.oracle.com//security-alerts/cpujul2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com//security-alerts/cpujul2021.html"
},
{
"name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"refsource": "MISC",
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
"assignerShortName": "openssl",
"cveId": "CVE-2020-1967",
"datePublished": "2020-04-21T13:45:15.136Z",
"dateReserved": "2019-12-03T00:00:00.000Z",
"dateUpdated": "2026-10-08T21:03:24.490Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
displaying 1 - 10 vulnerabilities in total 322