CVEvulnerability

CVE-2011-2057

7.5 HIGH Published 2011-10-22 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2011-10-22
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-20

Description

The cat6000-dot1x component in Cisco IOS 12.2 before 12.2(33)SXI7 does not properly handle (1) a loop between a dot1x enabled port and an open-authentication dot1x enabled port and (2) a loop between a dot1x enabled port and a non-dot1x port, which allows remote attackers to cause a denial of service (traffic storm) via unspecified vectors that trigger many Spanning Tree Protocol (STP) Bridge Protocol Data Unit (BPDU) frames, aka Bug ID CSCtq36327.

Affected configurations

• cisco ios (>= 12.2 < 12.2\(33\)sxi7)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References