Cisco IOS Software Internet Key Exchange Memory Leak Vulnerability (cisco-sa-20130925-ike)

high Nessus Plugin ID 70318

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

A vulnerability exists in the Internet Key Exchange (IKE) protocol of Cisco IOS Software that 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 when IKEv1 or IKE version 2 (IKEv2) is configured the vulnerability can be triggered only by sending a malformed IKEv1 packet. In specific conditions, normal IKEv1 packets can also cause an affected release of Cisco IOS Software to leak memory. Only IKEv1 is affected by this vulnerability. An exploit could cause Cisco IOS Software not to release allocated memory, causing a memory leak. A sustained attack may result in a device reload. Cisco has released free software updates that address this vulnerability. There are no workarounds to mitigate this vulnerability.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20130925-ike.

Plugin Details

Severity: High

ID: 70318

File Name: cisco-sa-20130925-ike.nasl

Version: 1.14

Type: local

Family: CISCO

Published: 10/7/2013

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2013

Vulnerability Publication Date: 9/25/2013

Reference Information

CVE: CVE-2013-5473

BID: 62643

CISCO-SA: cisco-sa-20130925-ike

CISCO-BUG-ID: CSCtx66011

Detections

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