SB2011102204 - Denial of service in lldp implementation in Cisco IOS
Published: October 22, 2011 Updated: January 21, 2021
Security Bulletin ID
SB2011102204
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2011-1640)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly support a large number of LLDP Management Address (MA) TLVs in ethernet-lldp component in Cisco IOS. A remote attacker can trigger resource exhaustion via specially crafted LLDPDUs and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.