CVE-2021-21237: git_large_file_storage_project git_large_file_storage Untrusted Search Path

Vulnerability summary

CVE-2021-21237 is a high (CVSS 7.8) Untrusted Search Path vulnerability in git_large_file_storage_project git_large_file_storage. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.7% of scored vulnerabilities.

Timeline

1. 15-01-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-426Untrusted Search PathThe product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.