CVE-2011-2057 Denial of service in n/a
Remote attackers can cause a traffic storm and denial of service in Cisco IOS by exploiting improper handling of Spanning Tree Protocol loops in dot1x configurations.
- 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-2011-2057?
CVE-2011-2057 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 cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle (1) a loop between a dot1x enabled port and an open-authentication dot1x enabled port and (2) a loop between a dot1x enabled port and a non-dot1x port, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many Spanning Tree Protocol (STP) Bridge Protocol Data Unit (BPDU) frames, aka Bug ID CSCtq36327.
Weakness: CWE-20
Which versions are affected by CVE-2011-2057?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2011-2057?
No fix has been published for CVE-2011-2057 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-2011-2057 being exploited?
There is no known exploitation of CVE-2011-2057 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-q6p8-cpxm-w8xp.