CVE-2023-6246
Glibc: heap-based buffer overflow in __vsyslog_internal()
CVSS Score
8.4
EPSS Score
0.0%
EPSS Percentile
0th
A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when the openlog function was not called, or called with the ident argument set to NULL, and the program name (the basename of argv[0]) is bigger than 1024 bytes, resulting in an application crash or local privilege escalation. This issue affects glibc 2.36 and newer.
| CWE | CWE-122 |
| Vendor | n/a |
| Product | glibc |
| Published | Jan 31, 2024 |
| Last Updated | Feb 13, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
n/a / glibc
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Fedora / Fedora
All versions affected References
packetstormsecurity.com: http://packetstormsecurity.com/files/176931/glibc-qsort-Out-Of-Bounds-Read-Write.html packetstormsecurity.com: http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html seclists.org: http://seclists.org/fulldisclosure/2024/Feb/3 seclists.org: http://seclists.org/fulldisclosure/2024/Feb/5 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-6246 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2249053 lists.fedoraproject.org: https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ lists.fedoraproject.org: https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ security.gentoo.org: https://security.gentoo.org/glsa/202402-01 openwall.com: https://www.openwall.com/lists/oss-security/2024/01/30/6 qualys.com: https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt security.netapp.com: https://security.netapp.com/advisory/ntap-20240216-0007/
Credits
Red Hat would like to thank Qualys Threat Research Unit for reporting this issue.