Ubuntu update for mod-wsgi

1) Security features bypass

EUVDB-ID: #VU66201

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

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 4.5.17-1ubuntu1.1

libapache2-mod-wsgi-py3 (Ubuntu package): before 4.5.17-1ubuntu1.1

CPE2.3

• cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:libapache2-mod-wsgi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:libapache2-mod-wsgi-py3_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://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.