CVE-2011-2395 Security feature bypass in n/a
Remote attackers can bypass Router Advertisement Guarding on Cisco IOS switches by sending fragmented IPv6 packets, allowing unauthorized network configuration changes.
- 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-2011-2395?
CVE-2011-2395 is a medium-severity vulnerability in Cisco Ios, published on 7 Jun 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Neighbor Discovery (ND) protocol implementation in Cisco IOS on unspecified switches allows remote attackers to bypass the Router Advertisement Guarding functionality via a fragmented IPv6 packet in which the Router Advertisement (RA) message is contained in the second fragment, as demonstrated by (1) a packet in which the first fragment contains a long Destination Options extension header or (2) a packet in which the first fragment contains an ICMPv6 Echo Request message.
Weakness: CWE-16
Which versions are affected by CVE-2011-2395?
It affects 1 product.
Products include Cisco Ios.
How do I fix CVE-2011-2395?
No fix has been published for CVE-2011-2395 yet. Limit exposure of the affected software until one is available.
Is CVE-2011-2395 being exploited?
There is no known exploitation of CVE-2011-2395 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-mg4g-9536-v7mv.