Description (CNA)
libcasper(3) communicates with helper processes via UNIX domain sockets, and uses the select(2) system call to wait for data to become available. However, it does not verify that its socket descriptor fits within select(2)'s descriptor set size limit of FD_SETSIZE (1024). An attacker able to cause an application using libcasper(3) to allocate large file descriptors, e.g., by opening many descriptors and executing a program which is not careful to close them upon startup, may trigger stack corruption. If the target application runs with setuid root privileges, this could be used to escalate local privileges.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| FreeBSD / FreeBSD | affected 15.0-RELEASE before p9; affected 14.4-RELEASE before p5; affected 14.3-RELEASE before p14 |
CWE
CWE-121
References
ADP enrichment
No English description supplied.
No references supplied.