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CVE-2006-0515

Status Candidate

Overview

Cisco PIX/ASA 7.1.x before 7.1(2) and 7.0.x before 7.0(5), PIX 6.3.x before 6.3.5(112), and FWSM 2.3.x before 2.3(4) and 3.x before 3.1(7), when used with Websense/N2H2, allows remote attackers to bypass HTTP access restrictions by splitting the GET method of an HTTP request into multiple packets, which prevents the request from being sent to Websense for inspection, aka bugs CSCsc67612, CSCsc68472, and CSCsd81734.

Related Files

cisco-websense-bypass.txt
Posted May 17, 2006
Authored by George D. Gal

For each HTTP request the Cisco PIX or other Cisco device forwards individual packets to Websense to determine whether or not the request should be permitted. However, when splitting the HTTP request into two or more packets on the HTTP method it is possible to circumvent the filtering mechanism. Affected versions are Websense 5.5.2, Cisco PIX OS / ASA versions below 7.0.4.12, Cisco PIX OS versions below 6.3.6(112), FWSM 2.3.x, and FWSM 3.x.

tags | advisory, web
systems | cisco
advisories | CVE-2006-0515
SHA-256 | 8aeae261f2d8b33cb7f16363b89f38beceb4080fce9a0d8b8fc55851a9705816
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