Multiple Cisco IOS Session Initiation Protocol Denial of Service Vulnerabilities

high Nessus Plugin ID 49025


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


Multiple vulnerabilities exist in the Session Initiation Protocol (SIP) implementation in Cisco IOS that can be exploited remotely to trigger a memory leak or to cause a reload of the IOS device.
Cisco has released free software updates that address these vulnerabilities. Fixed Cisco IOS software listed in the Software Versions and Fixes section contains fixes for all vulnerabilities addressed in this advisory.
There are no workarounds available to mitigate the effects of any of the vulnerabilities apart from disabling the protocol or feature itself, if administrators do not require the Cisco IOS device to provide voice over IP services.


Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20080924-sip.

See Also

Plugin Details

Severity: High

ID: 49025

File Name: cisco-sa-20080924-siphttp.nasl

Version: 1.23

Type: combined

Family: CISCO

Published: 9/1/2010

Updated: 11/15/2018

Risk Information


Risk Factor: Low

Score: 2.7


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: E:U/RL:OF/RC: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: 9/24/2008

Vulnerability Publication Date: 9/24/2008

Reference Information

CVE: CVE-2008-3799, CVE-2008-3800, CVE-2008-3801, CVE-2008-3802

BID: 31361