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Secunia Security Advisory 40420

Secunia Security Advisory 40420
Posted Jul 3, 2010
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Red Hat 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, and potentially gain escalated privileges, and by malicious people to cause a DoS.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, redhat
SHA-256 | d06563b420bd41d6a168699a2c7ab3f4c7772cf3a758be9435a489e77ef24dc6

Secunia Security Advisory 40420

Change Mirror Download
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TITLE:
Red Hat update for kernel

SECUNIA ADVISORY ID:
SA40420

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40420/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40420

RELEASE DATE:
2010-07-03

DISCUSS ADVISORY:
http://secunia.com/advisories/40420/#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/40420/

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=40420

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:
Red Hat 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, and potentially gain escalated privileges, and by
malicious people to cause a DoS.

For more information:
SA38229
SA38502
SA38594

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

2) An error exists within the implementation of the TIPC protocol,
which can be exploited by malicious, local users to cause a NULL
pointer dereference by sending datagrams through AF_TIPC before
entering the network mode.

3) 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.

Successful exploitation requires that the attacker has write access
to a GFS2 file system mounted with the "quota=on" or "quota=account"
options.

4) 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 or gain escalated privileges.

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.

SOLUTION:
Updated packages are available via Red Hat Network.

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

PROVIDED AND/OR DISCOVERED BY:
Red Hat credits:
1) Jukka Taimisto and Olli Jarva of Codenomicon Ltd, Nokia Siemens
Networks, and Wind River on behalf of their customer.
3) Mario Mikocevic
5) Dan Rosenberg

ORIGINAL ADVISORY:
RHSA-2010-0504:
https://rhn.redhat.com/errata/RHSA-2010-0504.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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