Multiple Vendor Call Gate Creation Input Validation Vulnerability

BID:2739

Info

Multiple Vendor Call Gate Creation Input Validation Vulnerability

Bugtraq ID: 2739
Class: Input Validation Error
CVE:
Remote: Unknown
Local: Yes
Published: Feb 16 2001 12:00AM
Updated: Feb 16 2001 12:00AM
Credit: This vulnerability was first published by NetBSD on February 16, 2001.
Vulnerable: Sun Trusted Solaris 8.0 x86
Sun Trusted Solaris 7.0 x86
Sun Solaris 8_x86
Sun Solaris 7.0_x86
Sun Solaris 2.6_x86
OpenBSD OpenBSD 2.8
OpenBSD OpenBSD 2.7
OpenBSD OpenBSD 2.6
OpenBSD OpenBSD 2.5
OpenBSD OpenBSD 2.4
NetBSD NetBSD 1.4.2 x86
NetBSD NetBSD 1.4.1 x86
NetBSD NetBSD 1.4 x86
Not Vulnerable:

Discussion

Multiple Vendor Call Gate Creation Input Validation Vulnerability

In some i386 operating systems, the mechanisms for setting LDT entries contain an input validation error that can be exploited when creating call gates. By default on NetBSD and Solaris systems, it may be possible for users to create malicious LDT entries resulting in kernel code at arbitrary addresses being executed when the procedure is called. It has been reported that OpenBSD contains this vulnerability, however it is not present in default kernels.

It is likely that this vulnerability can be used to gain root privileges.

Exploit / POC

Multiple Vendor Call Gate Creation Input Validation Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

References

Multiple Vendor Call Gate Creation Input Validation Vulnerability

References:

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