In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
Affects JetBrains TeamCity On-Premises servers before 2023.05.4; TeamCity Cloud was not affected. The fix is included in 2023.05.4.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 2023.05.4
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
JetBrains TeamCity, a continuous integration and build management server, is affected by this vulnerability. An attacker could bypass authentication and then run arbitrary code on the TeamCity Server.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- JetBrains TeamCity
fixed in 2023.05.4
References 7
jetbrains.com
blog.jetbrains.com
packetstormsecurity.com
attackerkb.com
sonarsource.com
Questions about CVE-2023-42793
What does this mean?
An authentication bypass in TeamCity Server let an attacker get past login checks and perform remote code execution, gaining administrative control of the server.Source: rapid7.com, blog.jetbrains.com
Am I affected, and how do I check?
TeamCity On-Premises versions before 2023.05.4 are affected. TeamCity Cloud was not affected. To check, compare the installed TeamCity Server version against 2023.05.4 and confirm whether the server is On-Premises or Cloud.Source: rapid7.com, blog.jetbrains.com
What should I do about it?
Upgrade TeamCity On-Premises to 2023.05.4 or later. For older TeamCity versions (8.0 and later), JetBrains provides a fix plugin that can be installed instead.Source: rapid7.com, blog.jetbrains.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2023-10-04, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data