Vulnerability-Lookup

RHSA-2024:4457

Vulnerability from csaf_opensuse - Published: 2024-07-10 00:00 - Updated: 2026-09-20 11:41

Summary

security update for openssh

Severity

Low

Notes

Title of the patch: security update for openssh

Description of the patch: This security update provides a functional equivalent of RHSA-2024:4457. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2024:4457.

Patchnames: RHSA-2024:4457

CVE-2024-6409

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 6 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 9:openssh-0:8.7p1-38.el9_4.4.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:openssh-askpass-0:8.7p1-38.el9_4.4.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:openssh-clients-0:8.7p1-38.el9_4.4.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:openssh-keycat-0:8.7p1-38.el9_4.4.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:openssh-server-0:8.7p1-38.el9_4.4.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 9:pam_ssh_agent_auth-0:0.10.4-5.38.el9_4.4.x86_64	—	Vendor Fix

Threats

Impact important

References

5 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://www.suse.com/security/cve/CVE-2024-6409/	self
https://www.suse.com/security/cve/CVE-2024-6409	external
https://bugzilla.suse.com/1227217	external

JSON

To clipboard

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      "text": "Low"
    },
    "category": "csaf_security_advisory",
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          "text": "A race condition vulnerability was discovered in how signals are handled by OpenSSH\u0027s server (sshd). If a remote attacker does not authenticate within a set time period, then sshd\u0027s SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server.",
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      "threats": [
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      "title": "CVE-2024-6409"
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  ]
}

CVE-2024-6409 (GCVE-0-2024-6409)

Vulnerability from cvelistv5 – Published: 2024-07-08 17:57 – Updated: 2026-08-21 12:24

Title

Openssh: possible remote code execution due to a race condition in signal handling affecting red hat enterprise linux 9

Summary

A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server.

Severity

7 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-11 00:00 UTC

CWE

CWE-364 - Signal Handler Race Condition

Assigner

redhat redhat root

References

23 references

URL	Tags
https://access.redhat.com/errata/RHSA-2024:4457	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4613	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4716	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4910	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4955	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:4960	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2024:5444	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2024-6409	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2295085	issue-trackingx_refsource_REDHAT
http://www.openwall.com/lists/oss-security/2024/07/08/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/09/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/09/5	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/10/1	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/10/2	x_transferred
https://almalinux.org/blog/2024-07-09-cve-2024-6409/	x_transferred
https://bugzilla.suse.com/show_bug.cgi?id=1227217	x_transferred
https://explore.alas.aws.amazon.com/CVE-2024-6409.html	x_transferred
https://github.com/openela-main/openssh/commit/c0…	x_transferred
https://security-tracker.debian.org/tracker/CVE-2…	x_transferred
https://security.netapp.com/advisory/ntap-2024071…	x_transferred
https://sig-security.rocky.page/issues/CVE-2024-6409/	x_transferred
https://ubuntu.com/security/CVE-2024-6409	x_transferred
https://www.suse.com/security/cve/CVE-2024-6409.html	x_transferred

Impacted products

12 products

Vendor	Product	Version

Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:8.7p1-38.el9_4.4 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	Unaffected: 0:8.7p1-12.el9_0.3 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.0::appstream cpe:/o:redhat:rhel_e4s:9.0::baseos
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support	Unaffected: 0:8.7p1-30.el9_2.7 , < * (rpm) cpe:/a:redhat:rhel_eus:9.2::appstream cpe:/o:redhat:rhel_eus:9.2::baseos
Red Hat	Red Hat OpenShift Container Platform 4.13	Unaffected: 413.92.202408122222-0 , < * (rpm) cpe:/a:redhat:openshift:4.13::el8 cpe:/a:redhat:openshift:4.13::el9
Red Hat	Red Hat OpenShift Container Platform 4.14	Unaffected: 414.92.202407300859-0 , < * (rpm) cpe:/a:redhat:openshift:4.14::el8 cpe:/a:redhat:openshift:4.14::el9
Red Hat	Red Hat OpenShift Container Platform 4.15	Unaffected: 415.92.202407301159-0 , < * (rpm) cpe:/a:redhat:openshift:4.15::el8 cpe:/a:redhat:openshift:4.15::el9
Red Hat	Red Hat OpenShift Container Platform 4.16	Unaffected: 416.94.202407171205-0 , < * (rpm) cpe:/a:redhat:openshift:4.16::el9
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

Date Public

2024-07-08 17:45

Credits

Red Hat would like to thank Solar Designer (CIQ/Rocky Linux) for reporting this issue.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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Action not permitted

RHSA-2024:4457

CVE-2024-6409 (GCVE-0-2024-6409)

Tags

Sightings

Nomenclature

Related by attack behaviour