Ubuntu update for mod-wsgi

1) Security features bypass

EUVDB-ID: #VU66201

Risk: Medium

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

CVE-ID: CVE-2022-2255

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to mod_wsgi does not correctly remove the X-Client-IP header when processing requests from untrusted proxies. A remote attacker can pass a trusted proxy IP address via the X-Client-IP HTTP header and bypass implemented security restrictions.

Mitigation

Update the affected package mod-wsgi to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

libapache2-mod-wsgi (Ubuntu package): before 4.6.8-1ubuntu3.1

libapache2-mod-wsgi-py3 (Ubuntu package): before 4.9.0-1ubuntu0.1

External links

http://ubuntu.com/security/notices/USN-5551-1

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.