Description
The ipv6 component in Cisco IOS before 15.1(4)M1.3 allows remote attackers to conduct fingerprinting attacks and obtain potentially sensitive information about the presence of the IOS operating system via an ICMPv6 Echo Request packet containing a Hop-by-Hop (HBH) extension header (EH) with a 0x0c01050c value in the PadN option data, aka Bug ID CSCtq02219.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
http://tools.cisco.com/security/center/viewIpsSignature.x?signatureId=36606&signatureSubId=0
Broken Link x_refsource_confirm
http://blogs.cisco.com/security/1999tcp-redux-the-ipv6-flavor
Scores
EPSS
0.0156
EPSS Percentile
72.2%
Details
CWE
CWE-200
Status
published
Products (1)
cisco/ios
< 15.1\(4\)m1.3
Published
Oct 22, 2011
Tracked Since
Feb 18, 2026