Yamcs: Unauthenticated Directory Traversal
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.4%
exploitation probability
0.4%top 63% of all CVEs
observed exploitation
nono source reports it
Yamcs is a mission control framework. Prior to 5.11.13, Yamcs StaticFileHandler.locateFile resolves an unauthenticated request path without using Path.normalize and Path.toAbsolutePath to confirm that the absolute path remains within the configured staticRoots. A path containing traversal segments can escape the intended web root and return an arbitrary readable host file. The flaw is in yamcs-core/src/main/java/org/yamcs/http/StaticFileHandler.java and can disclose sensitive operating-system and application data. This issue is fixed in version 5.11.13, and the 5.12 line is fixed from version 5.12.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
yamcs · yamcsReferences
https://github.com/yamcs/yamcs/commit/c7dfd24e469ae1086c23e0fe04401cb1ce4260d4https://github.com/yamcs/yamcs/commit/f4bc588880c166849e983aa8f65b9c8107d06091https://github.com/yamcs/yamcs/releases/tag/yamcs-5.11.13https://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.0https://github.com/yamcs/yamcs/security/advisories/GHSA-9jg3-g3wh-w9pj