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HIGH7.5

GHSA-mw99-9chc-xw7r

Maliciously crafted Git server replies can cause DoS on go-git clients

Quick fix

GHSA-mw99-9chc-xw7r — github.com/go-git/go-git/v5: upgrade to the fixed version with the command below.

go get github.com/go-git/go-git/v5@v5.11.0

Details

### Impact A denial of service (DoS) vulnerability was discovered in go-git versions prior to `v5.11`. This vulnerability allows an attacker to perform denial of service attacks by providing specially crafted responses from a Git server which triggers resource exhaustion in `go-git` clients.

Applications using only the in-memory filesystem supported by `go-git` are not affected by this vulnerability. This is a `go-git` implementation issue and does not affect the upstream `git` cli.

### Patches Users running versions of `go-git` from `v4` and above are recommended to upgrade to `v5.11` in order to mitigate this vulnerability.

### Workarounds In cases where a bump to the latest version of `go-git` is not possible, we recommend limiting its use to only trust-worthy Git servers.

## Credit Thanks to Ionut Lalu for responsibly disclosing this vulnerability to us.

### References - [GHSA-mw99-9chc-xw7r](https://github.com/go-git/go-git/security/advisories/GHSA-mw99-9chc-xw7r)

Are you affected?

Enter the version of the package you're using.

Affected packages

Go/github.com/go-git/go-git/v5
Introduced in: 0Fixed in: 5.11.0
Fixgo get github.com/go-git/go-git/v5@v5.11.0
Go/gopkg.in/src-d/go-git.v4
Introduced in: 4.7.1

No fixed version published yet for gopkg.in/src-d/go-git.v4 (go modules). Pin to a known-safe version or switch to an alternative.

References