PT-2013-5563 · Cisco · Cisco Ios+1

Published 2013-09-25 · Updated 2013-10-07 · CVE-2013-5473

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 12.2, 15.1, and 15.2 Cisco IOS XE versions 3.4.2S through 3.4.5S Cisco IOS XE versions 3.6.xS before 3.6.1S

Description A memory leak in the Internet Key Exchange (IKE) protocol could allow an unauthenticated, remote attacker to cause a memory leak that could lead to a device reload. The vulnerability is due to incorrect handling of malformed IKE packets by the affected software. An attacker could exploit this vulnerability by sending crafted IKE packets to a device configured with features that leverage IKE version 1 (IKEv1). Although IKEv1 is automatically enabled on a Cisco IOS Software and Cisco IOS XE Software when IKEv1 or IKE version 2 (IKEv2) is configured, the vulnerability can be triggered only by sending a malformed IKEv1 packet.

Recommendations For Cisco IOS versions 12.2, 15.1, and 15.2, update to a fixed version to address the vulnerability. For Cisco IOS XE versions 3.4.2S through 3.4.5S, update to a fixed version to address the vulnerability. For Cisco IOS XE versions 3.6.xS before 3.6.1S, update to version 3.6.1S or later to address the vulnerability. As a temporary workaround, consider disabling IKEv1 until a patch is available. Restrict access to devices configured with features that leverage IKE version 1 (IKEv1) to minimize the risk of exploitation.

Fix

DoS

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2013-5473

Affected Products

Cisco Ios

Cisco Ios Xe

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2013-5473 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-ike · Vendor Advisory
• http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-ike · Vendor Advisory