Vulnerability Details : CVE-2022-39260
Git is an open source, scalable, distributed revision control system. `git shell` is a restricted login shell that can be used to implement Git's push/pull functionality via SSH. In versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4, the function that splits the command arguments into an array improperly uses an `int` to represent the number of entries in the array, allowing a malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. Because the resulting array is then passed to `execv()`, it is possible to leverage this attack to gain remote code execution on a victim machine. Note that a victim must first allow access to `git shell` as a login shell in order to be vulnerable to this attack. This problem is patched in versions 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 and users are advised to upgrade to the latest version. Disabling `git shell` access via remote logins is a viable short-term workaround.
Vulnerability category: OverflowMemory CorruptionExecute code
Products affected by CVE-2022-39260
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*
- cpe:2.3:a:git-scm:git:2.38.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-39260
2.46%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-39260
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST | |
8.5
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
1.8
|
6.0
|
GitHub, Inc. |
CWE ids for CVE-2022-39260
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: security-advisories@github.com (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- security-advisories@github.com (Primary)
References for CVE-2022-39260
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OHNO2FB55CPX47BAXMBWUBGWHO6N6ZZH/
[SECURITY] Fedora 35 Update: git-2.38.1-1.fc35 - package-announce - Fedora Mailing-Lists
-
https://support.apple.com/kb/HT213496
About the security content of Xcode 14.1 - Apple SupportThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UKFHE4KVD7EKS5J3KTDFVBEKU3CLXGVV/
[SECURITY] Fedora 36 Update: git-2.38.1-1.fc36 - package-announce - Fedora Mailing-ListsMailing List
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C7B6JPKX5CGGLAHXJVQMIZNNEEB72FHD/
[SECURITY] Fedora 37 Update: git-2.38.1-1.fc37 - package-announce - Fedora Mailing-Lists
-
https://security.gentoo.org/glsa/202312-15
Git: Multiple Vulnerabilities (GLSA 202312-15) — Gentoo security
-
https://lists.debian.org/debian-lts-announce/2022/12/msg00025.html
[SECURITY] [DLA 3239-1] git security updateMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UKFHE4KVD7EKS5J3KTDFVBEKU3CLXGVV/
[SECURITY] Fedora 36 Update: git-2.38.1-1.fc36 - package-announce - Fedora Mailing-Lists
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C7B6JPKX5CGGLAHXJVQMIZNNEEB72FHD/
[SECURITY] Fedora 37 Update: git-2.38.1-1.fc37 - package-announce - Fedora Mailing-ListsMailing List
-
https://github.com/git/git/security/advisories/GHSA-rjr6-wcq6-83p6
Heap overflow in `git shell` leading to RCE · Advisory · git/git · GitHubMitigation;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OHNO2FB55CPX47BAXMBWUBGWHO6N6ZZH/
[SECURITY] Fedora 35 Update: git-2.38.1-1.fc35 - package-announce - Fedora Mailing-ListsMailing List
-
http://seclists.org/fulldisclosure/2022/Nov/1
Full Disclosure: APPLE-SA-2022-11-01-1 Xcode 14.1Mailing List;Third Party Advisory
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