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TITLE:
Ubuntu update for linux

SECUNIA ADVISORY ID:
SA46539

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46539/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46539

RELEASE DATE:
2011-10-21

DISCUSS ADVISORY:
http://secunia.com/advisories/46539/#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/46539/

ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=46539

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 linux. This fixes some weaknesses and
a vulnerability, which can be exploited by malicious people with
physical access to compromise a vulnerable system and by malicious
people to cause a DoS (Denial of Service).

1) A boundary error when handling string descriptors during new
device probes in the "auerswald_probe()" function
(drivers/usb/misc/auerswald.c) can be exploited to cause a buffer
overflow by inserting a malicious USB device.

Successful exploitation of this vulnerability may allow the execution
of arbitrary code.

2) An error within the "sctp_make_init()" and "sctp_make_init_ack()"
functions when calculating the INIT/INIT-ACK chunk length can be
exploited to cause a kernel oops by sending specially crafted SCTP
packets.

Successful exploitation of this weakness requires that
"net.sctp.addip_enable" is enabled.

SOLUTION:
Apply updated packages.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
1) R. Dominguez Vega, MWR InfoSecurity.
2) George Cheimonidis in a bug report.

ORIGINAL ADVISORY:
USN-1236-1:
http://www.ubuntu.com/usn/usn-1236-1/

MWR InfoSecurity:
http://labs.mwrinfosecurity.com/files/Advisories/mwri_linux-usb-buffer-overflow_2009-10-29.pdf

linux GIT:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a8170c35e738d62e9919ce5b109cf4ed66e95bde

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
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private users keeping their systems up to date against the latest
vulnerabilities.

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