OpenBSD and NetBSD systrace_preprepl() integer overflow
| openbsd-systracepreprepl-integer-overflow (29392) |  High Risk |
Description:
OpenBSD and NetBSD are vulnerable to an integer overflow in the systrace_preprepl() function. A local attacker could send a large integer value to the ioctl() syscall to obtain sensitive information, cause a denial of service, or gain elevated privileges.
Platforms Affected:
- NetBSD, NetBSD 2.0
- NetBSD, NetBSD 2.0.1
- NetBSD, NetBSD 2.0.2
- NetBSD, NetBSD 2.0.3
- NetBSD, NetBSD 2.0.4
- NetBSD, NetBSD 2.1
- NetBSD, NetBSD 3.0
- NetBSD, NetBSD 3.0.1
- NetBSD, NetBSD 3.0.2
- NetBSD, NetBSD CURRENT
- OpenBSD, OpenBSD 3.8
- OpenBSD, OpenBSD 3.9
Remedy:
For OpenBSD 3.8:
Apply the patch for this vulnerability, as listed in OpenBSD 3.8 errata - 019: SECURITY FIX: October 7, 2006. See References.
For OpenBSD 3.9:
Apply the patch for this vulnerability, as listed in OpenBSD 3.9 errata - 014: SECURITY FIX: October 7, 2006. See References.
For NetBSD:
Refer to NetBSD Security Advisory 2006-024 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Privileges
References:
- NetBSD-SA2006-024, systrace(4) integer overflow at http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-024.txt.asc.
- OpenBSD 3.8 errata, 019: SECURITY FIX: October 7, 2006 at http://www.openbsd.org/errata38.html#systrace.
- OpenBSD 3.9 errata, 014: SECURITY FIX: October 7, 2006 at http://www.openbsd.org/errata.html#systrace.
- BID-20392: OpenBSD Systrace STRIOCREPLACE Local Integer Overflow Vulnerability
- CVE-2006-5218: Integer overflow in the systrace_preprepl function (STRIOCREPLACE) in systrace in OpenBSD 3.9 and NetBSD 3 allows local users to cause a denial of service (crash), gain privileges, or read arbitrary kernel memory via large numeric arguments to the systrace ioctl.
- OSVDB ID: 29570: Multiple BSD systrace systrace_preprepl() Function Overflow
- SA22324: OpenBSD systrace "systrace_preprepl()" Integer Overflow Vulnerability
- SECTRACK ID: 1017009: BSD UNIX systrace STRIOCREPLACE Integer Overflow Lets Local Users Obtain Elevated Privileges
Reported:
Oct 07, 2006
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