Ubuntu update for curl

1) Input validation error

EUVDB-ID: #VU66881

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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

Update the affected package curl to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 22.04

curl (Ubuntu package): before 7.81.0-1ubuntu1.4

libcurl4 (Ubuntu package): before 7.81.0-1ubuntu1.4

libcurl3-nss (Ubuntu package): before 7.81.0-1ubuntu1.4

libcurl3-gnutls (Ubuntu package): before 7.81.0-1ubuntu1.4

libcurl3 (Ubuntu package): before 7.47.01u buntu2.19+esm4

External links

http://ubuntu.com/security/notices/USN-5587-1

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.