critical
9.8
CWE
22
Advisory Published
CVE Published
Updated

CVE-2023-49569: Maliciously crafted Git server replies can lead to path traversal and RCE on go-git clients

First published: Wed Jan 10 2024(Updated: )

### Impact A path traversal vulnerability was discovered in go-git versions prior to `v5.11`. This vulnerability allows an attacker to create and amend files across the filesystem. In the worse case scenario, remote code execution could be achieved. Applications are only affected if they are using the [ChrootOS](https://pkg.go.dev/github.com/go-git/go-billy/v5/osfs#ChrootOS), which is the default when using "Plain" versions of Open and Clone funcs (e.g. PlainClone). Applications using [BoundOS](https://pkg.go.dev/github.com/go-git/go-billy/v5/osfs#BoundOS) or in-memory filesystems are not affected by this issue. 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 in a timely manner, we recommend limiting its use to only trust-worthy Git servers. ## Credit Thanks to Ionut Lalu for responsibly disclosing this vulnerability to us.

Credit: cve-requests@bitdefender.com

Affected SoftwareAffected VersionHow to fix
redhat/go-git<5.11
5.11
go/gopkg.in/src-d/go-git.v4>=4.0.0<=4.13.1
go/github.com/go-git/go-git/v5>=5.0.0<5.11.0
5.11.0
go-git>=4.0.0<5.11.0
IBM Db2 Warehouse<=v3.5 through refresh 10v4.0 through refresh 9v4.5 through refresh 3v4.6 through refresh 6v4.7 through refresh 4v4.8 through refresh 4

Remedy

An update to version 5.11 fixes the issue

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-49569?

    CVE-2023-49569 has been classified with a high severity due to its potential for remote code execution.

  • How do I fix CVE-2023-49569?

    To mitigate CVE-2023-49569, upgrade to go-git version 5.11 or later.

  • What is the impact of CVE-2023-49569?

    CVE-2023-49569 allows attackers to conduct path traversal attacks, enabling them to create and amend files across the filesystem.

  • Which software is affected by CVE-2023-49569?

    CVE-2023-49569 affects go-git versions prior to 5.11 and certain versions of IBM Db2 on Cloud Pak for Data.

  • How does CVE-2023-49569 allow remote code execution?

    CVE-2023-49569 allows remote code execution through its path traversal vulnerability that lets attackers manipulate filesystem paths.

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