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Vigil@nce - Cisco ASA, FWSM: bypassing ACL via time-range

May 2013 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

An attacker can bypass an ACL of Cisco ASA and FWSM, which uses the time-range object.

Impacted products: ASA, Cisco Catalyst, IOS, Cisco Router xx00 Series

Severity: 2/4

Creation date: 23/04/2013

DESCRIPTION OF THE VULNERABILITY

The time-range object is used to define a time range to be applied on an ACL.

However, the periodic time-range object is not correctly implemented, and it is ignored.

An attacker can therefore bypass an ACL of Cisco ASA and FWSM, which uses the time-range object.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/C...




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