CVE-2018-8099 — Double Free in Libgit2

CWE-415 — Double FreeCWE-125 — Out-of-bounds Read8 documents6 sources
Severity
6.5MEDIUMNVD
EPSS
1.2%
top 21.23%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Libgit2Debian Libgit2Debian Linux
Timeline
PublishedMar 14
Latest updateApr 30

Description

Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/libgit2< libgit2 0.27.0+dfsg.1-0.6 (bookworm)
▶NVDlibgit2/libgit2< 0.26.2
▶Debianlibgit2/libgit2< 0.27.0+dfsg.1-0.6+3

Also affects: Debian Linux 9.0

Patches

Patch: github.com ↗Patch: libgit2.github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-mhmm-r9x5-v638: Incorrect returning of an error code in the index↗2022-04-30
▶
OSV
CVE-2018-8099: Incorrect returning of an error code in the index↗2018-03-14
▶

📋Vendor Advisories

2
Red Hat
libgit2: denial of service (DoS) via crafted repository index files↗2018-03-08
▶
Debian
CVE-2018-8099: libgit2 - Incorrect returning of an error code in the index.c:read_entry() function leads ...↗2018
▶

💬Community

3
Bugzilla
CVE-2018-8099 CVE-2018-8098 libgit2: denial of service (DoS) via crafted repository index files [fedora-all]↗2018-03-12
▶
Bugzilla
CVE-2018-8099 CVE-2018-8098 libgit2: denial of service (DoS) via crafted repository index files [epel-all]↗2018-03-12
▶
Bugzilla
CVE-2018-8099 CVE-2018-8098 libgit2: denial of service (DoS) via crafted repository index files↗2018-03-12
▶