In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible
Published 2023-09-19 17:15:08
Updated 2023-10-03 15:44:07
View at NVD,   CVE.org

CVE-2023-42793 is in the CISA Known Exploited Vulnerabilities Catalog

This issue is known to have been leveraged as part of a ransomware campaign.
CISA vulnerability name:
JetBrains TeamCity Authentication Bypass Vulnerability
CISA required action:
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA description:
JetBrains TeamCity contains an authentication bypass vulnerability that allows for remote code execution on TeamCity Server.
Notes:
https://blog.jetbrains.com/teamcity/2023/09/critical-security-issue-affecting-teamcity-on-premises-update-to-2023-05-4-now/
Added on 2023-10-04 Action due date 2023-10-25

Exploit prediction scoring system (EPSS) score for CVE-2023-42793

97.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 100 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2023-42793

  • JetBrains TeamCity Unauthenticated Remote Code Execution
    Disclosure Date: 2023-09-19
    First seen: 2023-10-08
    exploit/multi/http/jetbrains_teamcity_rce_cve_2023_42793
    This module exploits an authentication bypass vulnerability to achieve unauthenticated remote code execution against a vulnerable JetBrains TeamCity server. All versions of TeamCity prior to version 2023.05.4 are vulnerable to this issue. The vulnerability was original

CVSS scores for CVE-2023-42793

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
JetBrains s.r.o.

CWE ids for CVE-2023-42793

References for CVE-2023-42793

Products affected by CVE-2023-42793

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