CVE-2023-30536

slim/psr7 is a PSR-7 implementation for use with Slim 4. In versions prior to 1.6.1 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. An attacker that is able to control the header names that are passed to Slilm-Psr7 would be able to intentionally craft invalid messages, possibly causing application errors or invalid HTTP requests being sent out with an PSR-18 HTTP client. The latter might present a denial of service vector if a remote service’s web application firewall bans the application due to the receipt of malformed requests. The issue has been patched in version 1.6.1. There are no known workarounds to this issue. Users are advised to upgrade.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/slimphp/Slim-Psr7/commit/ed1d553225dd190875d8814c47460daed4b550bb	Patch
https://github.com/slimphp/Slim-Psr7/security/advisories/GHSA-q2qj-628g-vhfw	Vendor Advisory
https://www.rfc-editor.org/rfc/rfc7230#section-3.2.4	Technical Description

Configurations

Configuration 1 (hide)

cpe:2.3:a:slimframework:slim_psr-7:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-04-17 22:15

Updated : 2024-02-28 20:13

NVD link : CVE-2023-30536

Mitre link : CVE-2023-30536

CVE.ORG link : CVE-2023-30536

JSON object : View

Products Affected

slimframework

slim_psr-7

CWE

CWE-436

Interpretation Conflict

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