VulnerabilityAnalyzed
CVE-2023-42793
JetBrains TeamCity Authentication Bypass Vulnerability
KEVCRITICAL 9.8EPSS 100.0%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 25 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.98% probability · 100th percentile
- CISA KEV
- Listed 4 October 2023 · due 25 October 2023 · used in ransomware campaigns
- Weakness
- CWE-288, CWE-306
- Affected
- jetbrains/teamcity
- Source
- cve@jetbrains.com
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://blog.jetbrains.com/teamcity/2023/09/critical-security-issue-affecting-teamcity-on-premises-update-to-2023-05-4-now/ ; https://nvd.nist.gov/vuln/detail/CVE-2023-42793
References
- http://packetstormsecurity.com/files/174860/JetBrains-TeamCity-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://attackerkb.com/topics/1XEEEkGHzt/cve-2023-42793Third Party Advisory
- https://blog.jetbrains.com/teamcity/2023/09/cve-2023-42793-vulnerability-post-mortem/Vendor Advisory
- https://www.jetbrains.com/privacy-security/issues-fixed/Vendor Advisory
- https://www.rapid7.com/blog/post/2023/09/25/etr-cve-2023-42793-critical-authentication-bypass-in-jetbrains-teamcity-ci-cd-servers/Broken Link, Third Party Advisory
- https://www.securityweek.com/recently-patched-teamcity-vulnerability-exploited-to-hack-servers/Press/Media Coverage
- https://www.sonarsource.com/blog/teamcity-vulnerability/Exploit, Third Party Advisory
- http://packetstormsecurity.com/files/174860/JetBrains-TeamCity-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://attackerkb.com/topics/1XEEEkGHzt/cve-2023-42793Third Party Advisory
- https://blog.jetbrains.com/teamcity/2023/09/cve-2023-42793-vulnerability-post-mortem/Vendor Advisory
- https://www.jetbrains.com/privacy-security/issues-fixed/Vendor Advisory
- https://www.rapid7.com/blog/post/2023/09/25/etr-cve-2023-42793-critical-authentication-bypass-in-jetbrains-teamcity-ci-cd-servers/Broken Link, Third Party Advisory
- https://www.securityweek.com/recently-patched-teamcity-vulnerability-exploited-to-hack-servers/Press/Media Coverage
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-42793US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.