Package Instance

go-git clients vulnerable to DoS via maliciously crafted Git server replies
### Impact
A denial of service (DoS) vulnerability was discovered in go-git versions prior to `v5.13`. 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. 

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 `v5.13` 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.

go-git has an Argument Injection via the URL field
### Impact
An argument injection vulnerability was discovered in `go-git` versions prior to `v5.13`. 

Successful exploitation of this vulnerability could allow an attacker to set arbitrary values to [git-upload-pack flags](https://git-scm.com/docs/git-upload-pack). This only happens when the `file` transport protocol is being used, as that is the only protocol that shells out to `git` binaries.

### Affected versions
Users running versions of `go-git` from `v4` and above are recommended to upgrade to `v5.13` in order to mitigate this vulnerability.

### Workarounds
In cases where a bump to the latest version of `go-git` is not possible, we recommend users to enforce restrict validation rules for values passed in the URL field.

## Credit
Thanks to @vin01 for responsibly disclosing this vulnerability to us.