PT-2011-1004 · Cisco · Cisco Ios

Published 2011-09-28 · Updated 2012-05-14 · CVE-2011-3273

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Cisco IOS versions 15.0 through 15.1

Description The issue is related to a memory leak in Cisco IOS when IPS or Zone-Based Firewall is configured, allowing remote attackers to cause a denial of service via vectors that trigger many session creation flows. This can lead to memory consumption or device crash. The problem is due to errors in the implementation of Cisco IOS Intrusion Prevention System and Cisco IOS Zone-Based Firewall components.

Recommendations For Cisco IOS versions 15.0 through 15.1, update to a version that addresses these vulnerabilities, as Cisco has released software updates that fix the issue. At the moment, there is no information about a temporary workaround that can mitigate this vulnerability.

Fix

DoS

Weakness Enumeration

CWE-399

Related Identifiers

BDU:2014-00026

CVE-2011-3273

Affected Products

Cisco Ios

References · 6

• https://bdu.fstec.ru/vul/2014-00026 · Security Note
• http://cisco.com/en/US/products/products_security_advisory09186a0080b95d57.shtml · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-3273 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-zbfw · Vendor Advisory
• http://tools.cisco.com/security/center/viewAlert.x?alertId=24123 · Note
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110928-zbfw · Note