CVE-2011-2395: Medium severity cisco ios vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2011-2395?
CVE-2011-2395 has a Medium severity rating as it allows attackers to bypass certain security features within Cisco IOS.
How do I fix CVE-2011-2395?
To mitigate CVE-2011-2395, upgrade to a fixed version of Cisco IOS as specified in Cisco's security advisory.
What versions of Cisco IOS are affected by CVE-2011-2395?
CVE-2011-2395 affects various versions of Cisco IOS including 12.0(16)SC3, 12.2(3.4)BP, and 12.4(2)T2 among others.
What are the potential impacts of CVE-2011-2395?
Exploitation of CVE-2011-2395 could lead to unauthorized access to network resources.
Is there a workaround for CVE-2011-2395?
There are no effective workarounds for CVE-2011-2395; the recommended action is to upgrade the IOS to a non-vulnerable version.