Authentication bypass in JetBrains TeamCity

1) Improper authentication

EUVDB-ID: #VU86218

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-23917

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an error in the authentication process. A remote attacker can bypass authentication checks and gain administrative control of that TeamCity server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2023.11.2

CPE2.3

• cpe:2.3:a:jetbrains_s.r.o.:teamcity:2017.1:*:*:*:*:*:*:*
• cpe:2.3:a:jetbrains_s.r.o.:teamcity:2017.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:jetbrains_s.r.o.:teamcity:2017.1.2:*:*:*:*:*:*:*

External links

https://blog.jetbrains.com/teamcity/2024/02/critical-security-issue-affecting-teamcity-on-premises-cve-2024-23917/

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.