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

Vulnerability from cvelistv5 – Published: 2024-07-08 17:57 – Updated: 2025-11-11 16:04
VLAI?
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.
CWE
  • CWE-364 - Signal Handler Race Condition
Assigner
References
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
Impacted products
Vendor Product Version
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:8.7p1-38.el9_4.4 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:8.7p1-38.el9_4.4 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
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    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
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    Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support Unaffected: 0:8.7p1-30.el9_2.7 , < * (rpm)
    cpe:/o:redhat:rhel_eus:9.2::baseos
    cpe:/a:redhat:rhel_eus:9.2::appstream
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    Red Hat Red Hat OpenShift Container Platform 4.13 Unaffected: 413.92.202408122222-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.13::el9
    cpe:/a:redhat:openshift:4.13::el8
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    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
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    Red Hat Red Hat OpenShift Container Platform 4.15 Unaffected: 415.92.202407301159-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.15::el9
    cpe:/a:redhat:openshift:4.15::el8
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    Red Hat Red Hat OpenShift Container Platform 4.16 Unaffected: 416.94.202407171205-0 , < * (rpm)
    cpe:/a:redhat:openshift:4.16::el9
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    Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Credits
Red Hat would like to thank Solar Designer (CIQ/Rocky Linux) for reporting this issue.
Show details on NVD website

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}


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Author Source Type Date

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.


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Detection rules are retrieved from Rulezet.

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