#VU80950 Authentication bypass using an alternate path or channel in TeamCity - CVE-2023-42793

Vulnerability identifier: #VU80950

Vulnerability risk: High

CVSSv4.0: 9.3 [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:A/U:Amber]

CVE-ID: CVE-2023-42793

CWE-ID: CWE-288

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
TeamCity
Web applications / CRM systems

Vendor: JetBrains s.r.o.

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an authentication bypass using an alternate path. A remote attacker can bypass authentication and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2023.05 - 2023.05.3

---

External links
https://www.jetbrains.com/privacy-security/issues-fixed/

---

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?

Yes. This vulnerability is being exploited in the wild.