Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2011-2395

Severity CVSS v4.0:
Pending analysis
Type:
CWE-16 Configuration Errors
Publication date:
09/06/2011
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:4.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:4.1.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:4.1.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:8.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:8.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:9.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:9.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:9.14:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:10.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:10.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:10.3\(3.3\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:10.3\(3.4\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:10.3\(4.2\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:10.3\(4.3\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:10.3\(16\):*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools