Denial of service in cURL



Published: 2022-08-31
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-35252
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		cURL
Client/Desktop applications / Other client software

Vendor curl.haxx.se

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU66881

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2022-35252

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the way curl handles cookies with control codes (byte values below 32). When cookies that contain such control codes are later sent back to an HTTP(S) server, it might make the server return a 400 response, effectively allowing a "sister site" to deny service to siblings.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

cURL: 4.9 - 7.84.0

CPE2.3 External links

http://curl.haxx.se/docs/CVE-2022-35252.html


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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