Vulnerability in Cisco iOS

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.

EPSS: 0.023 (81.4th percentile) — read the EPSS interpretation.

Affected products

Cisco Ios — versions 4.1, 4.1.1, 4.1.2
N/a — versions n/a

Weakness classification (CWE)

CWE-16

References

cve@mitre.org (mailing-list, x_refsource_FULLDISC)
cve@mitre.org (x_refsource_SREASON, third-party-advisory)
cve@mitre.org (vdb-entry, x_refsource_XF)