GitHub Advisoryadvisory · Go

GHSA-4g4p-42wc-9f3m Git LFS can execute a Git binary from the current directory

CRITICAL Published 2022-02-11 Modified 2022-04-20 Official page ↗
Aliases
CVE-2020-27955
Ecosystem
Go
Packages
github.com/git-lfs/git-lfs
Severity
Critical
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-427
Reviewed
2021-05-21

Affected packages

• Go github.com/git-lfs/git-lfs: < 2.12.1 → fixed in 2.12.1

Description

Impact 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 occurs because on Windows, Go includes (and prefers) the current directory when the name of a command run does not contain a directory separator. Patches This version should be patched in v2.12.1, which will be released in coordination with this security advisory. Workarounds Other than avoiding untrusted repositories, there is no workaround. For more information If you have any questions or comments about this advisory: • Start a discussion in the Git LFS discussion page. • If you cannot open a discussion, please email the core team using their usernames at `github.com`.

Related

Alias · CVE (1)

  • CVE-2020-27955 Git LFS 2.12.0 allows Remote Code Execution. vulnerability

Weakness · CWE (1)

  • CWE-427 Uncontrolled Search Path Element weakness

References