CVE-2011-1640 Denial of service in n/a
Remote attackers can crash Cisco IOS devices by sending crafted LLDP packets due to improper handling of Management Address TLVs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2011-1640?
CVE-2011-1640 is a high-severity denial of service vulnerability in Cisco Ios, published on 22 Oct 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The ethernet-lldp component in Cisco IOS 12.2 before 12.2(33)SXJ1 does not properly support a large number of LLDP Management Address (MA) TLVs, which allows remote attackers to cause a denial of service (device crash) via crafted LLDPDUs, aka Bug ID CSCtj22354.
Weakness: CWE-400
Which versions are affected by CVE-2011-1640?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2011-1640?
No fix has been published for CVE-2011-1640 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2011-1640 being exploited?
There is no known exploitation of CVE-2011-1640 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios
- CVE-2017-12240 Cisco IOS and IOS XE Software DHCP Remote Code Execution
- CVE-2017-3881 Cisco IOS and IOS XE Remote Code Execution
- CVE-2018-0167 Cisco IOS, XR, and XE Software Buffer Overflow
- CVE-2017-6736 Cisco IOS and IOS XE Software SNMP Remote Code Execution
- CVE-2017-6737 Cisco IOS and IOS XE Software SNMP Remote Code Execution
Sources
Also known as GHSA-cg39-wq74-79hj.