JetBrains TeamCity Relative Path Traversal Authentication Bypass
CVE-2024-27199 is a relative path traversal vulnerability in JetBrains TeamCity On-Premises affecting versions through 2023.11.3 and fixed in 2023.11.4. The flaw stems from path traversal that permits unauthenticated access to a limited set of authenticated TeamCity endpoints over HTTP(S). Public reporting cited in the provided content states that exploitation can reach administrative HTTPS configuration functionality, including the "/app/https/settings/uploadCertificate" endpoint, allowing an attacker to replace the server HTTPS certificate with one of their choosing and alter the HTTPS service port. The issue therefore functions as a limited authentication bypass tied to improper path handling, enabling unauthorized administrative actions and limited disclosure of sensitive information.
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
32 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously exploited path traversal vulnerability in JetBrains TeamCity referenced as having been leveraged by threat actors targeting on-premises servers.
A relative path traversal vulnerability in JetBrains TeamCity that was rapidly weaponized and exploited to access files, extract credentials, and deploy backdoors.
A relative path traversal vulnerability in JetBrains TeamCity that may allow attackers to perform limited administrative actions.
A relative path traversal vulnerability in JetBrains TeamCity that enables limited administrative actions without proper authorization.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.