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TITLE:
Cisco IOS XR Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA44725

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44725/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44725

RELEASE DATE:
2011-05-26

DISCUSS ADVISORY:
http://secunia.com/advisories/44725/#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/44725/

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=44725

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 XR, which can be
exploited by malicious people to cause a DoS (Denial of Service).

1) An unspecified error exists when processing IPv4 packets
originating from the Cisco Line Card or Cisco CRS MSC and can be
exploited to crash the NetIO process.

Successful exploitation of this vulnerability requires that an IPv4
address is configured on one of the interfaces of a Cisco Line Card
or Cisco CRS MSC.

2) An error in the SSH server when handling an SSHv1 connection does
not delete sshd_lock files in the /tmp directory. This can be
exploited to consume all available disk space in the /tmp filesystem
and cause a crash.

3) An unspecified error when processing IPv4 packets can be exploited
to reload the SPA (Shared Port Adapters) Interface Processor.

Successful exploitation of this vulnerability requires that an IPv4
address is configured on any of the SPA interface processor
interfaces.

Please see the vendor's advisory for the list of affected products
and versions.

SOLUTION:
Apply updates. Please see the vendor's advisory for more information.

PROVIDED AND/OR DISCOVERED BY:
1) Reported by the vendor.
2) The vendor credits a customer.
3) Reported by the vendor.

ORIGINAL ADVISORY:
Cisco:
http://www.cisco.com/warp/public/707/cisco-sa-20110525-iosxr.shtml
http://www.cisco.com/warp/public/707/cisco-sa-20110525-iosxr-ssh.shtml
http://www.cisco.com/warp/public/707/cisco-sa-20110525-iosxrspa.shtml

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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