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GHSA-w5pp-99ch-qj29
github.com/go-git/go-git/v6github.com/go-git/go-git/v5Impact
Several denial-of-service issues were identified in go-git when parsing maliciously crafted Git repository data.
An attacker may craft a malicious .pack, .idx or loose objects that causes an application using an affected version of go-git to panic or consume excessive resources.
This can lead to denial of service in applications that use go-git to clone, fetch, open, or otherwise process untrusted repositories or Git object data.
Exploitation requires the ability to alter read-only files such as .pack or .idx from the local repository's .git/objects/pack/ directory. Alternatively, the user would need to be interacting with a malicious remote server, which is not recommended and exposes users to a broader class of security risks beyond this issue.
Patches
Users should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to v5 are likely to be affected, users are recommended to upgrade to a supported go-git version.
Credits
go-git thanks @kodareef5, @AyushParkara and @N0zoM1z0 for reporting this in four separate reports. 🙇
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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