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TITLE:
Cisco IOS Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA42917

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42917/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42917

RELEASE DATE:
2011-01-18

DISCUSS ADVISORY:
http://secunia.com/advisories/42917/#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/42917/

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

https://ca.secunia.com/?page=viewadvisory&vuln_id=42917

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:
Some vulnerabilities have been reported in Cisco IOS, which can be
exploited by malicious users to bypass certain security restrictions
and by malicious people to cause a DoS (Denial of Service).

1) An error when processing certain IRC traffic can be exploited to
cause a device reload by accessing an IRC channel within 36 hours of
a reload.

2) An error in the CME (Communication Manager Express) component when
handling a SNR number change menu from an extension mobility phone can
be exploited to crash the device.

3) A memory leak when processing UDP SIP REGISTER packets can be
exploited to exhaust memory resources via a specially crafted SIP
packet.

4) An error in the PKI implementation does not clear the public key
cache for the peers when the certificate map is changed. This can be
exploited to reconnect and bypass the certificate ban.

5) A memory fragmentation error in the CME (Communication Manager
Express) component when handling SIP TRUNK traffic can be exploited
to exhaust memory resources via specially crafted SIP packets.

SOLUTION:
Update to Cisco IOS version 15.0(1)XA5.

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

ORIGINAL ADVISORY:
Cisco:
http://www.cisco.com/en/US/docs/ios/15_0/15_0x/15_01_XA/rn800xa.pdf

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.

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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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