CVE-2024-24577 libgit2 is vulnerable to arbitrary code execution due to heap corruption in `git_index_add`

What is CVE-2024-24577?

CVE-2024-24577 is a high-severity memory corruption vulnerability in libgit2, published on 6 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Using well-crafted inputs to `git_index_add` can cause heap corruption that could be leveraged for arbitrary code execution. There is an issue in the `has_dir_name` function in `src/libgit2/index.c`, which frees an entry that should not be freed. The freed entry is later used and overwritten with potentially bad actor-controlled data leading to controlled heap corruption. Depending on the application that uses libgit2, this could lead to arbitrary code execution. This issue has been patched in version 1.6.5 and 1.7.2.

Weakness: CWE-119, CWE-122

Which versions are affected by CVE-2024-24577?

It affects 1 product.

Products include Libgit2 Libgit2.

How do I fix CVE-2024-24577?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2024-24577 being exploited?

There is no known exploitation of CVE-2024-24577 in the wild and no public exploit code.

Other vulnerabilities in libgit2

• CVE-2024-24575 libgit2 is vulnerable to a denial of service attack in `git_revparse_single` High 7.5
• CVE-2023-22742 libgit2 fails to verify SSH keys by default Medium 5.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-34274, BELL-CVE-2024-24577, CLEANSTART-2024-DS47827, DEBIAN-CVE-2024-24577, DLA-3742-1, DSA-5619-1 and 17 more.