CVE-2023-6246

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-122
• CWE-787

• http://packetstormsecurity.com/files/176931/glibc-qsort-Out-Of-Bounds-Read-Write.htmlExploit, Third Party Advisory, VDB Entry
• http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2024/Feb/3Exploit, Third Party Advisory
• http://seclists.org/fulldisclosure/2024/Feb/5Exploit, Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2023-6246Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2249053Issue Tracking, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/Mailing List
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/Mailing List
• https://security.gentoo.org/glsa/202402-01Third Party Advisory
• https://security.netapp.com/advisory/ntap-20240216-0007/
• https://www.openwall.com/lists/oss-security/2024/01/30/6Exploit, Mailing List, Third Party Advisory
• https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txtExploit, Third Party Advisory
• http://packetstormsecurity.com/files/176931/glibc-qsort-Out-Of-Bounds-Read-Write.htmlExploit, Third Party Advisory, VDB Entry
• http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.htmlExploit, Third Party Advisory, VDB Entry
• http://seclists.org/fulldisclosure/2024/Feb/3Exploit, Third Party Advisory
• http://seclists.org/fulldisclosure/2024/Feb/5Exploit, Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2023-6246Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2249053Issue Tracking, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/Mailing List
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/Mailing List
• https://security.gentoo.org/glsa/202402-01Third Party Advisory
• https://security.netapp.com/advisory/ntap-20240216-0007/
• https://www.openwall.com/lists/oss-security/2024/01/30/6Exploit, Mailing List, Third Party Advisory
• https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txtExploit, Third Party Advisory
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html

Published

Jan 31, 2024

Last Modified

Jun 17, 2026

Status

Modified