CVE-2023-6246
A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.79% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122, CWE-787
- Affected
- gnu/glibc · fedoraproject/fedora
- Source
- secalert@redhat.com
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.