HTTP response splitting in PSR-7

1) HTTP response splitting

EUVDB-ID: #VU61508

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-24775

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not corrector process CRLF character sequences. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PSR-7: 1.8.0 - 2.1.0

CPE2.3

• cpe:2.3:a:guzzle:psr7:1.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:guzzle:psr7:1.8.1:*:*:*:*:*:*:*
• cpe:2.3:a:guzzle:psr7:1.8.2:*:*:*:*:*:*:*
• cpe:2.3:a:guzzle:psr7:1.8.3:*:*:*:*:*:*:*
• cpe:2.3:a:guzzle:psr7:2.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:guzzle:psr7:2.1.0:*:*:*:*:*:*:*

External links

https://github.com/guzzle/psr7/security/advisories/GHSA-q7rv-6hp3-vh96
https://github.com/guzzle/psr7/pull/485/commits/e55afaa3fc138c89adf3b55a8ba20dc60d17f1f1
https://github.com/guzzle/psr7/pull/486/commits/9a96d9db668b485361ed9de7b5bf1e54895df1dc

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.