FreeBSD i386_set_ldt() integer overflow
| freebsd-i386setldt-overflow (29132) |  High Risk |
Description:
FreeBSD is vulnerable to an integer overflow, caused by improper bounds checking of the i386_set_ldt() system call. A local attacker could exploit this vulnerability to gain elevated privileges or cause the system to crash.
Platforms Affected:
- FreeBSD, FreeBSD 5.2
- FreeBSD, FreeBSD 5.3
- FreeBSD, FreeBSD 5.4
- FreeBSD, FreeBSD 5.5
Remedy:
Upgrade to the latest version of FreeBSD (FreeBSD 6.0-RELEASE or later), available from the FreeBSD Web site. See References.
Consequences:
Gain Privileges
References:
- BugTraq Mailing List, Sat Sep 23 2006 - 08:36:20 CDT , [RISE-2006002] FreeBSD 5.x kernel i386_set_ldt() integer overflow vulnerability at http://archives.neohapsis.com/archives/bugtraq/2006-09/0376.html.
- FreeBSD Web site, The FreeBSD Project at http://www.freebsd.org.
- iDEFENSE ADVISORY: 09.23.06, FreeBSD i386_set_ldt Integer Overflow Vulnerability at http://www.idefense.com/intelligence/vulnerabilities/display.php?id=414.
- BID-20158: FreeBSD I386_Set_LDT() Multiple Local Denial of Service Vulnerabilities
- CVE-2006-4172: Integer overflow vulnerability in the i386_set_ldt call in FreeBSD 5.5, and possibly earlier versions down to 5.2, allows local users to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2006-4178.
- SA22064: FreeBSD "i386_set_ldt()" Integer Overflow / Signedness Vulnerabilities
- SECTRACK ID: 1016926: FreeBSD Kernel i386_set_ldt() Integer Overflow Lets Local Users Deny Service
- SECTRACK ID: 1016928: FreeBSD i386_set_ldt() Integer Overflow May Let Local Users Gain Elevated Privileges
Reported:
Sep 23, 2006
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