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CVE-2011-2395

UnknownEPSS 2.29%

Last modified

CVE-2011-2395 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.29% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
2.29%

81.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos4.1
CiscoIos4.1.1
CiscoIos4.1.2
CiscoIos8.2
CiscoIos8.3
CiscoIos9.0
CiscoIos9.1
CiscoIos9.14
CiscoIos10.0
CiscoIos10.3
CiscoIos10.3\(3.3\)
CiscoIos10.3\(3.4\)
CiscoIos10.3\(4.2\)
CiscoIos10.3\(4.3\)
CiscoIos10.3\(16\)
CiscoIos10.3\(19a\)
CiscoIos11
CiscoIos11.0
CiscoIos11.0\(12\)
CiscoIos11.0\(17\)
CiscoIos11.0\(17\)bt
CiscoIos11.0\(18\)
CiscoIos11.0\(20.3\)
CiscoIos11.0\(22a\)
CiscoIos11.0\(22b\)
CiscoIos11.0\(x\)
CiscoIos11.0.12\(a\)bt
CiscoIos11.1
CiscoIos11.1\(5\)
CiscoIos11.1\(7\)
CiscoIos11.1\(7\)aa
CiscoIos11.1\(7\)ca
CiscoIos11.1\(9\)ia
CiscoIos11.1\(11\)
CiscoIos11.1\(12\)
CiscoIos11.1\(13\)
CiscoIos11.1\(13\)aa
CiscoIos11.1\(13\)ca
CiscoIos11.1\(13\)ia
CiscoIos11.1\(14\)
CiscoIos11.1\(15\)
CiscoIos11.1\(15\)aa
CiscoIos11.1\(15\)ca
CiscoIos11.1\(15\)ia
CiscoIos11.1\(16\)
CiscoIos11.1\(16\)aa
CiscoIos11.1\(16\)ia
CiscoIos11.1\(17\)
CiscoIos11.1\(17\)cc
CiscoIos11.1\(17\)ct

Showing 50 of 1409 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-2395?
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.
How severe is CVE-2011-2395?
Severity scoring for CVE-2011-2395 is pending analysis. The EPSS model estimates a 2.29% probability of exploitation in the next 30 days.
How do I fix CVE-2011-2395?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST