PT-2011-3259 · Cisco · Cisco Ios

Published 2011-10-22 · Updated 2020-08-05 · CVE-2011-1640

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 prior to 12.2(33)SXJ1

Description The issue is related to the ethernet-lldp component, which does not properly handle a large number of LLDP Management Address (MA) TLVs. This allows remote attackers to cause a denial of service, resulting in a device crash, by sending crafted LLDPDUs.

Recommendations For versions prior to 12.2(33)SXJ1, update to version 12.2(33)SXJ1 or later to resolve the issue. As a temporary workaround, consider restricting LLDP traffic to minimize the risk of exploitation.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2011-1640

Affected Products

Cisco Ios

References · 2

• http://cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/release/notes/caveats_SXJ.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-1640 · Security Note