PT-2008-5167 · Cisco · Cisco Ios

Published 2008-09-24 · Updated 2022-06-02 · CVE-2008-3813

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 through 12.4

Description A vulnerability exists in the Cisco IOS software implementation of Layer 2 Tunneling Protocol (L2TP). This issue affects devices when the L2TP mgmt daemon process is enabled, which can occur through various features including Layer 2 virtual private networks (L2VPN), Layer 2 Tunnel Protocol Version 3 (L2TPv3), Stack Group Bidding Protocol (SGBP), and Cisco Virtual Private Dial-Up Networks (VPDN). The vulnerability allows remote attackers to cause a denial of service (device reload) via a crafted L2TP packet. Cisco has released software updates to address this issue. Workarounds are available to mitigate this vulnerability.

Recommendations For Cisco IOS versions 12.2 through 12.4, update to a version that includes the software updates released by Cisco to address this vulnerability. As a temporary workaround, consider disabling the L2TP mgmt daemon process to prevent the device from reloading when processing a specially crafted L2TP packet.

Fix

Related Identifiers

CVE-2008-3813

Affected Products

Cisco Ios

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2008-3813 · Security Note
• http://cisco.com/en/US/products/products_security_advisory09186a0080a0157a.shtml · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20080924-l2tp · Vendor Advisory
• http://secunia.com/advisories/31990 · Note
• http://securitytracker.com/id?1020938 · Note
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5362 · Note
• http://vupen.com/english/advisories/2008/2670 · Note