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CVE-2023-6779

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 202402-01
Posted Feb 2, 2024
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202402-1 - Multiple vulnerabilities in glibc could result in Local Privilege Escalation. Versions greater than or equal to 2.38-r10 are affected.

tags | advisory, local, vulnerability
systems | linux, gentoo
advisories | CVE-2023-5156, CVE-2023-6246, CVE-2023-6779, CVE-2023-6780
SHA-256 | dc5103364dcaf34b9733e914efeb23949628b3316a7502944e9a2800aca0bbdb
Debian Security Advisory 5611-1
Posted Jan 31, 2024
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5611-1 - The Qualys Research Labs discovered several vulnerabilities in the GNU C Library's __vsyslog_internal() function (called by syslog() and vsyslog()). A heap-based buffer overflow (CVE-2023-6246), an off-by-one heap overflow (CVE-2023-6779) and an integer overflow (CVE-2023-6780) can be exploited for privilege escalation or denial of service.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, debian
advisories | CVE-2023-6246, CVE-2023-6779, CVE-2023-6780
SHA-256 | b706fe5111adeb5e4961a0c6b856dd95656c158ab3611e3f050084786321653f
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