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CVE-2023-29197

5.3 · MEDIUM

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP.

Published Apr 17, 2023CWE-436EPSS 1.22%

Overview

CVE-2023-29197 is a medium-severity vulnerability. It was published on April 17, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Affected versions are subject to improper header parsing. An attacker could sneak in a newline (\n) into both the header names and values. While the specification states that \r\n\r\n is used to terminate the header list, many servers in the wild will also accept \n\n. This is a follow-up to CVE-2022-24775 where the fix was incomplete. The issue has been patched in versions 1.9.1 and 2.4.5. There are no known workarounds for this vulnerability. Users are advised to upgrade.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcve.mitre.org/cgi-bin/cvename.cgi?name=2022-24775GitHubgithub.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96GitHubgithub.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvwReflists.debian.org/debian-lts-announce/2023/12/msg00028.htmlReflists.fedoraproject.org/archives/list/[email protected]/message/FJANWDXJZE5BGLN4MQ4FEHV5LJ6CMKQF/Reflists.fedoraproject.org/archives/list/[email protected]/message/O35UN4IK6VS2LXSRWUDFWY7NI73RKY2U/Refwww.rfc-editor.org/rfc/rfc7230#section-3.2.4Refcve.mitre.org/cgi-bin/cvename.cgi?name=2022-24775GitHubgithub.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96GitHubgithub.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvw

How CyberStrike helps

Frequently asked questions

What is CVE-2023-29197?

CVE-2023-29197 is a medium-severity vulnerability. It was published on April 17, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2023-29197?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-29197?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-29197?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-29197 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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