CVE-2023-49568: go-git Input Validation Flaw — Fix

Description

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
go-git_project	go-git	4.0.0 — 5.11.0

References

Advisories & Patches

https://github.com/go-git/go-git/security/advisories/GHSA-mw99-9chc-xw7r https://github.com/go-git/go-git/security/advisories/GHSA-mw99-9chc-xw7r

Frequently Asked Questions

What is CVE-2023-49568? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-49568? +

CVE-2023-49568 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-49568? +

CVE-2023-49568 affects products from go-git_project, specifically: go-git. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-49568? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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