CVE-2021-21300 log

Severity Low
Remote Yes
Type Arbitrary code execution
In affected versions of Git a specially crafted repository that contains symbolic links as well as files using a clean/smudge filter such as Git LFS, may cause just-checked out script to be executed while cloning onto a case-insensitive file system such as NTFS, HFS+ or APFS. Note that clean/smudge filters have to be configured for that. As a workaround, if symbolic link support is disabled in Git (e.g. via `git config --global core.symlinks false`), the described attack won't work. Likewise, if no clean/smudge filters such as Git LFS are configured globally (i.e. _before_ cloning), the attack is foiled. As always, it is best to avoid cloning repositories from untrusted sources. The earliest impacted version is 2.14.2. The fix versions are: 2.30.1, 2.29.3, 2.28.1, 2.27.1, 2.26.3, 2.25.5, 2.24.4, 2.23.4, 2.22.5, 2.21.4, 2.20.5, 2.19.6, 2.18.5,
Group Package Affected Fixed Severity Status Ticket
AVG-1665 git 2.30.1-1 2.30.2-1 Low Fixed
Date Advisory Group Package Severity Type
13 Mar 2021 ASA-202103-3 AVG-1665 git Low arbitrary code execution

The issue can be mitigated by disabling symbolic link support using "git config --global core.symlinks false".