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TITLE:
v86d Netlink Message Verification Security Bypass

SECUNIA ADVISORY ID:
SA43516

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43516/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43516

RELEASE DATE:
2011-03-14

DISCUSS ADVISORY:
http://secunia.com/advisories/43516/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/43516/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=43516

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A security issue has been reported in v86d, which can be exploited by
malicious, local users to bypass certain security restrictions.

The security issue is caused due to v86d not properly verifying the
origin of Netlink messages, which can be exploited to e.g. manipulate
certain uvesafb settings by sending Netlink messages to v86d.

The security issue is reported in versions prior to 0.1.10.

SOLUTION:
Update to version 0.1.10.

PROVIDED AND/OR DISCOVERED BY:
Nelson Elhage

ORIGINAL ADVISORY:
http://www.openwall.com/lists/oss-security/2011/02/26/1
http://repo.or.cz/w/v86d.git/commitdiff/f9abfd412639286c3143e93e8ba2c9598dfba640

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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

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

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