All vulnerabilities
CVE-2023-42793

JetBrains TeamCity Authentication Bypass Vulnerability

JetBrains TeamCityApplications & CMS
Open in ThreatlineRecord JSON
CVSS
9.8Critical
ExploitationExploited in the wildAdded to KEV 4 Oct 2023. Known ransomware useCISA KEV
Exploit odds (EPSS)>99.9%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2023.05.4Fixed versionCVE List
Federal deadline25 Oct 2023Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 19 Sep 2023Exploit code publicMetasploit
  2. 19 Sep 2023, 16:57 UTCPublishedCVE List
  3. 4 Oct 2023Added to CISA KEVCISA KEV

Public exploit code and templates 3

  • Exploit moduleJetBrains TeamCity Unauthenticated Remote Code Execution 19 Sep 2023Metasploit
  • Remote exploitJetBrains TeamCity 2023.05.3 - Remote Code Execution (RCE) 14 Mar 2024Exploit-DB
  • Scanner templateJetBrains TeamCity < 2023.05.4 - Remote Code ExecutionNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.

Text from CVE List

Affected versions 1

  • TeamCityaffected: all versions before 2023.05.4CVE List

References 9