high
7.5
CWE
20
Advisory Published
CVE Published
Updated

CVE-2023-49568: Maliciously crafted Git server replies can cause DoS on go-git clients

First published: Wed Dec 27 2023(Updated: )

### 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)

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>=4.7.1<=4.13.1
go/github.com/go-git/go-git/v5<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 upgrade to v. 5.11 fixes this issue

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-49568?

    CVE-2023-49568 is classified as a denial of service (DoS) vulnerability.

  • How do I fix CVE-2023-49568?

    To resolve CVE-2023-49568, upgrade to go-git version 5.11 or later.

  • Which versions of go-git are affected by CVE-2023-49568?

    CVE-2023-49568 affects go-git versions before v5.11.

  • Can CVE-2023-49568 impact my application?

    Yes, CVE-2023-49568 can lead to resource exhaustion resulting in a denial of service for applications using the affected versions of go-git.

  • What software products are affected by CVE-2023-49568?

    CVE-2023-49568 impacts IBM Db2 on Cloud Pak for Data and multiple versions of go-git prior to v5.11.

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