CVE-2016-1885
medium
CVSS v3
6.2
CVSS v2
4.9
VIR risk
6.2
Description
Integer signedness error in the amd64_set_ldt function in sys/amd64/amd64/sys_machdep.c in FreeBSD 9.3 before p39, 10.1 before p31, and 10.2 before p14 allows local users to cause a denial of service (kernel panic) via an i386_set_ldt system call, which triggers a heap-based buffer overflow.
Predictions
Exploit likelihood
62%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: cve@mitre.org — https://security.FreeBSD.org/advisories/FreeBSD-SA-16:15.sysarch.asc
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| freebsd | 9.3 | affected | |
| freebsd | 10.1 | affected | |
| freebsd | 10.2 | affected | |
References
- http://packetstormsecurity.com/files/136276/FreeBSD-Kernel-amd64_set_ldt-Heap-Overflow.html
- http://seclists.org/fulldisclosure/2016/Mar/56
- http://seclists.org/fulldisclosure/2016/Mar/67
- http://www.coresecurity.com/advisories/freebsd-kernel-amd64setldt-heap-overflow
- http://www.securityfocus.com/archive/1/537812/100/0/threaded
- http://www.securityfocus.com/archive/1/537813/100/0/threaded
- http://www.securitytracker.com/id/1035309
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:15.sysarch.asc
- https://www.exploit-db.com/exploits/39570/
- http://packetstormsecurity.com/files/136276/FreeBSD-Kernel-amd64_set_ldt-Heap-Overflow.html
- http://seclists.org/fulldisclosure/2016/Mar/56
- http://seclists.org/fulldisclosure/2016/Mar/67
- http://www.coresecurity.com/advisories/freebsd-kernel-amd64setldt-heap-overflow
- http://www.securityfocus.com/archive/1/537812/100/0/threaded
- http://www.securityfocus.com/archive/1/537813/100/0/threaded
- http://www.securitytracker.com/id/1035309
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:15.sysarch.asc
- https://www.exploit-db.com/exploits/39570/
CWEs
CWE-119
Verify integrity in audit chain (admin only). AS-IS.