CVE-2021-21237

Git LFS is a command line extension for managing large files with Git. On Windows, if Git LFS operates on a malicious repository with a git.bat or git.exe file in the current directory, that program would be executed, permitting the attacker to execute arbitrary code. This does not affect Unix systems. This is the result of an incomplete fix for CVE-2020-27955. This issue occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator. Other than avoiding untrusted repositories or using a different operating system, there is no workaround. This is fixed in v2.13.2.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/git-lfs/git-lfs/security/advisories/GHSA-cx3w-xqmc-84g5	Third Party Advisory
https://github.com/git-lfs/git-lfs/commit/fc664697ed2c2081ee9633010de0a7f9debea72a	Patch Third Party Advisory
https://github.com/git-lfs/git-lfs/releases/tag/v2.13.2	Third Party Advisory
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27955	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:git_large_file_storage_project:git_large_file_storage:*:*:*:*:*:*:*:*

Information

Published : 2021-01-15 10:15

Updated : 2021-01-29 14:18

NVD link : CVE-2021-21237

Mitre link : CVE-2021-21237

JSON object : View

CWE

CWE-426

Untrusted Search Path

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Products Affected

git_large_file_storage_project

git_large_file_storage

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