Cisco IOS Software RSVP Denial of Service Vulnerability (cisco-sa-20120328-rsvp)

High Nessus Plugin ID 58571

Synopsis

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

Description

Cisco IOS Software and Cisco IOS XE Software contain a vulnerability in the RSVP feature when used on a device configured with VPN routing and forwarding (VRF) instances. An unauthenticated, remote attacker can exploit this to cause an interface wedge, which can lead to loss of connectivity, loss of routing protocol adjacency, and other denial of service (DoS) conditions. This vulnerability could be exploited repeatedly to cause an extended DoS condition. A workaround is available to mitigate this vulnerability.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID(s) CSCts80643.

See Also

http://www.nessus.org/u?685daaab

Plugin Details

Severity: High

ID: 58571

File Name: cisco-sa-20120328-rsvp.nasl

Version: 1.12

Type: local

Family: CISCO

Published: 2012/04/02

Updated: 2019/11/28

Dependencies: 47864

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2012-1311

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/03/28

Vulnerability Publication Date: 2012/03/28

Reference Information

CVE: CVE-2012-1311

BID: 52754

CISCO-BUG-ID: CSCts80643

CISCO-SA: cisco-sa-20120328-rsvp