CVE-2020-27955 Git LFS can execute a Git binary from the current directory
Git LFS allows remote code execution via untrusted repositories, requiring developers to upgrade to a patched version.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-27955?
CVE-2020-27955 is a critical code injection vulnerability in n/a, published on 5 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Git LFS 2.12.0 allows Remote Code Execution.
Weakness: CWE-427
Which versions are affected by CVE-2020-27955?
3 open source packages ship an affected version, including github.com/git-lfs/git-lfs and git-lfs. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/git-lfs/git-lfs Go | All versions | 2.12.1 |
github.com/git-lfs/git-lfs Go | All versions | 2.12.1 |
git-lfs Bitnami | From 2.12.0 | 2.12.1 |
Products include Git Large File Storage Project Git Large File Storage.
How do I fix CVE-2020-27955?
Upgrade github.com/git-lfs/git-lfs to 2.12.1 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2020-27955 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-27955 exists.
Public exploit code: 1 Metasploit module and 18 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as BIT-git-lfs-2020-27955, GHSA-4g4p-42wc-9f3m.