$ cve CVE-2022-23521 JSON

CVE-2022-23521

9.8

CRITICAL · CVSS 3.1 · EPSS 56.3% (pctl 99)

Patch early

EPSS 56.3% — above the 10% action threshold.

Description

Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge number of attributes for a single pattern, or when the declared attribute names are huge. These overflows can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue.

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	56.33% — more likely to be exploited than 99% of all CVEs
Weakness	CWE-190
On CISA KEV	no
Public exploit	none known
Published	2023-01-17
Last modified	2026-06-17

Affected (1)

Vendor	Product
git-scm	git

References

→ the Explorer · watch your stack · NVD