CVE-2016-1885: Buffer Overflow
First published: Fri Apr 08 2016(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD Kernel | =9.3 | |
| FreeBSD Kernel | =10.1 | |
| FreeBSD Kernel | =10.2 |
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Reference Links
- 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/
Frequently Asked Questions
What is the severity of CVE-2016-1885?
CVE-2016-1885 is considered a critical vulnerability because it can lead to a denial of service through a kernel panic.
How do I fix CVE-2016-1885?
To fix CVE-2016-1885, upgrade FreeBSD to version 9.3-p39, 10.1-p31, or 10.2-p14 or later.
What software is affected by CVE-2016-1885?
CVE-2016-1885 affects FreeBSD versions 9.3, 10.1, and 10.2 prior to their respective patch releases.
What type of vulnerability is CVE-2016-1885?
CVE-2016-1885 is a heap-based buffer overflow vulnerability caused by an integer signedness error.
Can CVE-2016-1885 be exploited remotely?
CVE-2016-1885 requires local user access for exploitation, making it a local denial of service issue.
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