CVE-2023-42793
JetBrains TeamCity: Authentication Bypass
As of , CVE-2023-42793 in JetBrains TeamCity is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 4 October 2023
- US federal deadline
- 25 October 202321 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Known
- EPSS score
- 0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- 0.95 on 4 October 2023EPSS on the day CISA listed it.
- Public exploit
- 1 Metasploit module and 1 Exploit-DB entry
- Fix
- Vendor advice: blog.jetbrains.comLinks below, from CISA's entry.
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA's required action
What the flaw is
JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.
CISA's description
In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
The CVE record's description, from JetBrains
- CVE published
- 19 September 2023
- Assigned by
- JetBrains
- CVSS
- 9.8 Critical (CVSS 3.1, from the CNA)
- CWE-288
- Authentication Bypass Using an Alternate Path or Channel
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- yes
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
- Exploit-DB published an exploit (EDB-ID 51884).
Public exploits
Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.
- Metasploit: JetBrains TeamCity Unauthenticated Remote Code Executionexploit module, rank excellent
- Exploit-DB: JetBrains TeamCity 2023.05.3 - Remote Code Execution (RCE)EDB-ID 51884, 14 March 2024
TeamCity: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2026-63077Deserialization of Untrusted Data | JetBrains TeamCity | Patch nowForensic triage required by CISA; ransomware use, listed within a year; Metasploit module | 0.90 | ||
| CVE-2024-27199Relative Path Traversal | JetBrains TeamCity | Patch nowRansomware use, listed within a year | 0.99 | ||
| CVE-2024-27198Authentication Bypass | JetBrains TeamCity | Patch this weekRansomware use; Metasploit module; EPSS 0.99 | 0.99 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org