CVEvulnerability
CVE-2023-6779
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2024-01-31
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-122, CWE-787
Description
An off-by-one 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 these functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.
Affected configurations
• gnu glibc (>= 2.37 < 2.39)
• fedoraproject fedora 38
• fedoraproject fedora 39
Related
References
- http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-6779 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2254395 Issue Tracking
- https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ Mailing List
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ Mailing List
- https://security.gentoo.org/glsa/202402-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240223-0006/ Third Party Advisory
- https://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List
- https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt Third Party Advisory
- http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-6779 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2254395 Issue Tracking
- https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ Mailing List
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ Mailing List
- https://security.gentoo.org/glsa/202402-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20240223-0006/ Third Party Advisory
- https://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List
- https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html cert-portal.siemens.com