CVE-2024-24575
Published: February 7, 2024Last modified: February 7, 2024
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_revparse_single` can cause the function to enter an infinite loop, potentially causing a Denial of Service attack in the calling application. The revparse function in `src/libgit2/revparse.c` uses a loop to parse the user-provided spec string. There is an edge-case during parsing that allows a bad actor to force the loop conditions to access arbitrary memory. Potentially, this could also leak memory if the extracted rev spec is reflected back to the attacker. As such, libgit2 versions before 1.4.0 are not affected. Users should upgrade to version 1.6.5 or 1.7.2.
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 |
Attack Vector | NETWORK |
Attack complexity | LOW |
Privileges required | NONE |
User interaction | NONE |
Scope | UNCHANGED |
Confidentiality | NONE |
Integrity impact | NONE |
Availability impact | HIGH |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
Product | Release | Package | Status |
---|---|---|---|
Alpaquita Linux | Stream | libgit2 | Fixed (1.7.2-r0) |
References
- https://github.com/libgit2/libgit2/commit/add2dabb3c16aa49b33904dcdc07cd915efc12fa
- https://github.com/libgit2/libgit2/releases/tag/v1.6.5
- https://github.com/libgit2/libgit2/releases/tag/v1.7.2
- https://github.com/libgit2/libgit2/security/advisories/GHSA-54mf-x2rh-hq9v
- https://lists.fedoraproject.org/archives/list/[email protected]/message/4M3P7WIEPXNRLBINQRJFXUSTNKBCHYC7/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/7CNDW3PF6NHO7OXNM5GN6WSSGAMA7MZE/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/S635BGHHZUMRPI7QOXOJ45QHDD5FFZ3S/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/Z6MXOX7I43OWNN7R6M54XLG6U5RXY244/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZGNHOEE2RBLH7KCJUPUNYG4CDTW4HTBT/