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"From 2007 to 2009 vulnerabilities in a typical end-user PC almost doubled from about 220 to 420."

Non-Microsoft software to blame for increase in vulnerabilities affecting typical Windows end-users, read more:

http://secunia.com/gfx/pdf/Secunia_Half_Year_Report_2010.pdf


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TITLE:
Ubuntu update for kernel

SECUNIA ADVISORY ID:
SA40833

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40833/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40833

RELEASE DATE:
2010-08-06

DISCUSS ADVISORY:
http://secunia.com/advisories/40833/#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/40833/

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=40833

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:
Ubuntu has issued an update for the kernel. This fixes some
vulnerabilities, which can be exploited by malicious, local users to
cause a DoS (Denial of Service), bypass certain security
restrictions, disclose potentially sensitive information, and
potentially gain escalated privileges, and by malicious people to
cause a DoS.

For more information:
SA32933

1) An error within the SCTP subsystem can be exploited to cause a
crash by sending a specially crafted init packet.

2) An error exists within the GFS2 implementation, which can be
exploited to cause a memory corruption and e.g. cause a DoS or gain
escalated privileges.

3) A race condition within the "find_keyring_by_name()" function in
security/keys/keyring.c can be exploited to access freed memory and
e.g. cause a system panic.

4) The "btrfs_ioctl_clone()" function in fs/btrfs/ioctl.c does not
properly check a user's read access to the source file before cloning
the file, which can be exploited to e.g. disclose sensitive
information.

5) An error exists within the "gfs2_set_flags()" function, which can
be exploited to change certain file attributes of files on an GFS2
file system.

6) An error in btrfs allows local users to set ACLs for arbitrary
files.

7) An error exists within eCryptfs when generating hash values, which
can be exploited to e.g. cause a kernel panic or gain escalated
privileges.

Successful exploitation requires certain UIDs.

Note: CVE-2008-7256 and CVE-2010-1643 only affect Ubuntu 6.06 LTS and
8.04 LTS. CVE-2010-1436, CVE-2010-1641, and CVE-2010-2492 do not
affect Ubuntu 6.06 LTS. CVE-2010-1636 does not affect Ubuntu 9.10.
CVE-2010-2071 only affects Ubuntu 9.10 and Ubuntu 10.04 LTS.
CVE-2010-1451 does not affect Ubuntu 10.04 LTS.

SOLUTION:
Apply updated packages.

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

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Chris Guo, Jukka Taimisto, and Olli Jarva
2) Mario Mikocevic
3) Toshiyuki Okajima
4, 5) Dan Rosenberg
6) Shi Weihua
7) Andre Osterhues

ORIGINAL ADVISORY:
USN-966-1:
https://lists.ubuntu.com/archives/ubuntu-security-announce/2010-August/001134.html

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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