Update Your libgit2 Library to Patch Critical Heap Corruption Vulnerability

CVSScvssV3_1: 8.6

Libgit2, the popular C library for interacting with Git repositories, had a vulnerability that could allow attackers to execute code on affected systems.

The issue was a heap corruption bug in the index.c file that handles adding files to the Git index. Maliciously crafted inputs to the git_index_add function could cause it to free memory that shouldn’t be freed. This freed memory would then get overwritten, leading to memory corruption.

An attacker could potentially exploit this to run arbitrary code on systems using libgit2. All they would need to do is get a victim to add a specially crafted file or commit to a repository.

Most worryingly, because libgit2 is used by many Git tools and hosting services, this leaves many servers and applications vulnerable to takeover.

The good news is libgit2 developers have released patched versions 1.6.5 and 1.7.2 that fix this issue. All users are urged to update immediately. You should also check any tools or services using libgit2 to ensure they have the latest version installed.

Taking some simple steps like keeping your libraries up-to-date can help prevent exploitation of vulnerabilities like this. Staying on top of security announcements for critical dependencies is important for protecting your systems.