CVE-2023-29197
Affected versions are subject to improper header parsing.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.22% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-436
- Affected
- guzzlephp/psr-7 · fedoraproject/fedora
- Source
- security-advisories@github.com
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-24775Not Applicable
- https://github.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96Not Applicable
- https://github.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvwVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/12/msg00028.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FJANWDXJZE5BGLN4MQ4FEHV5LJ6CMKQF/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O35UN4IK6VS2LXSRWUDFWY7NI73RKY2U/Mailing List, Third Party Advisory
- https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4Technical Description
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-24775Not Applicable
- https://github.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96Not Applicable
- https://github.com/guzzle/psr7/security/advisories/GHSA-wxmh-65f7-jcvwVendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/12/msg00028.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FJANWDXJZE5BGLN4MQ4FEHV5LJ6CMKQF/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O35UN4IK6VS2LXSRWUDFWY7NI73RKY2U/Mailing List, Third Party Advisory
- https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4Technical Description
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.