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TITLE:
Sun Solaris Kernel Covert Channel Security Bypass

SECUNIA ADVISORY ID:
SA31667

VERIFY ADVISORY:
http://secunia.com/advisories/31667/

CRITICAL:
Not critical

IMPACT:
Security Bypass

WHERE:
Local system

OPERATING SYSTEM:
Sun Solaris 8
http://secunia.com/product/94/
Sun Solaris 9
http://secunia.com/product/95/
Sun Solaris 10
http://secunia.com/product/4813/

DESCRIPTION:
A vulnerability has been reported in Sun Solaris, which can be
exploited by malicious, local users to bypass certain security
restrictions.

The vulnerability is caused due to an error within the Solaris kernel
related to system calls. This can be exploited to establish a covert
communication channel between two unprivileged processes, thus
bypassing e.g. the multi-level security policy in Solaris Trusted
Extensions or the isolation policy of zones(5) or chroot(2).

The vulnerability is reported in Solaris 8, 9, 10 for both the SPARC
and x86 platforms.

SOLUTION:
Apply patches.

-- SPARC Platform --

Solaris 8:
Apply patch 117350-56 or later.

Solaris 9:
Apply patch 122300-30 or later.

Solaris 10:
Apply patch 137111-05 or later.

OpenSolaris:
Fixed in build snv_90 or later.

-- x86 Platform --

Solaris 8:
Apply patch 117351-56 or later.

Solaris 9:
Apply patch 122301-30 or later.

Solaris 10:
Apply patch 137112-05 or later.

OpenSolaris:
Fixed in build snv_90 or later.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-240706-1

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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