CVE-2023-6779 Information

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.

Reference

https://access.redhat.com/security/cve/CVE-2023-6779 https://bugzilla.redhat.com/show_bug.cgi?id=2254395 https://www.openwall.com/lists/oss-security/2024/01/30/6 http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/