Improper Certificate Validation in GitLab API - CVE-2023-31485

Vulnerability identifier: #VU75605

CSH Severity: Medium

CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2023-31485

CWE-ID: CWE-295

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

Vulnerable software:
GitLab API

Software vendor:
CPAN

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to missing verification of the TLS certificate when connecting to a GitLab server. A remote attacker can perform MitM attack and trick the application into downloading a malicious file.

Install updates from vendor's website.

• https://github.com/bluefeet/GitLab-API-v4/pull/57
• https://www.openwall.com/lists/oss-security/2023/04/18/14
• https://github.com/chansen/p5-http-tiny/pull/151
• https://blog.hackeriet.no/perl-http-tiny-insecure-tls-default-affects-cpan-modules/
• http://www.openwall.com/lists/oss-security/2023/04/29/1