CVE-2021-21237CWE-426

Git LFS can execute a Git binary from the current directory on Windows

High · published January 15, 2021

CVSS v3.1
7.2
EPSS
0%
Percentile
38.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00453 · 38.4th percentile
Weakness
CWE-426 · Untrusted Search Path
Published
2021-01-15T17:36Z
EPSS history
Timeline
  • 15 JAN 17:36Z
    Git LFS can execute a Git binary from the current directory on Windows
    cvelistv5