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.
*CVSS:
| Base Score: | 7 |
| Access Vector: | Local |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 5.5 |
| Exploitability: | Proof-Of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Privileges
Remedy:
Upgrade to the latest version of FreeBSD (FreeBSD 6.0-RELEASE or later), available from the FreeBSD Web site. See References.
References:
- BugTraq Mailing List, Sat Sep 23 2006 - 08:36:20 CDT : [RISE-2006002] FreeBSD 5.x kernel i386_set_ldt() integer overflow vulnerability.
- FreeBSD Web site: The FreeBSD Project.
- iDEFENSE ADVISORY: 09.23.06: FreeBSD i386_set_ldt Integer Overflow Vulnerability.
- 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
Platforms Affected:
- FreeBSD FreeBSD 5.2
- FreeBSD FreeBSD 5.3
- FreeBSD FreeBSD 5.4
- FreeBSD FreeBSD 5.5
Reported:
Sep 23, 2006
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For corrections or additions please email xforce@iss.net
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.