Bug 166522

Summary:	CAN-2004-2480 squid access control bypass
Product:	Red Hat Enterprise Linux 4	Reporter:	Josh Bressers <bressers>
Component:	squid	Assignee:	Martin Stransky <stransky>
Status:	CLOSED WORKSFORME	QA Contact:
Severity:	low	Docs Contact:
Priority:	medium
Version:	4.0	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	impact=low,reported=20050821,public=20040510,source=cve
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-08-29 09:59:37 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Josh Bressers 2005-08-22 20:17:40 UTC

This issue was discovered by Nuno Costa:
http://archives.neohapsis.com/archives/bugtraq/2004-05/0070.html


hello

im not a expert in this area, but i work in a intranet that haves the
Squid/2.3.STABLE5 filtring all access's to the internet..

so i don't have access to the internet directaly, but i know that this proxy
allow access to especific web sites.. so, in the past if i us this:
http://urlwebsite_allowed.pt -> the vuln that is already discovered... i have
access to the website that i want...
but in this days, this vuln is now fixed so...
in my test's i found this way to pass this proxy, using:
http://website_allowed.ptmy_url -> now i have access...
using url.pt i can bypass the proxy and access the internet, i don't know how
faur, this could go!!
so i don't know if this is a bug from IE or just a simple bug from Squid.. ???
can anyone tell what we have in hands ?

Comment 1 Josh Bressers 2005-08-22 20:18:57 UTC

This issue should also affect RHEL2.1 and RHEL3.

Comment 2 Martin Stransky 2005-08-23 13:24:05 UTC

It was reported against 2.3 version and it seems to affect only this version. I
can't reproduce it on 2.4 or 2.5 version, I'm going to investigate it more...

Comment 3 Josh Bressers 2005-08-23 13:31:26 UTC

Martin,

There is a bit more information and more links in the CVE id:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-2480

I spent some time yesterday looking for this issue in upstream, but didn't find
much.  If it was fixed it was done in a non public manner.

Comment 4 Martin Stransky 2005-08-23 13:58:40 UTC

I went trough it too. It seems to me that this bug disappeared when upstream
switched/rewrited code from 2.3 to 2.4, I spent today googling/searching and I
haven't found anything relevant either. I wrote to original reporter and I'm
going to test the archaic 2.3 version...

Comment 5 Martin Stransky 2005-08-24 09:15:54 UTC

Unable to reproduce on the latest RHEL4, RHEL3, RHEL2.1, FC4 and FC3 + old squid
2.3.STABLE5. I tested it with Mozila/Firefox/IE...

Comment 6 Martin Stransky 2005-08-29 09:59:37 UTC

The original reporter hasn't replied and I can't reproduce it, so I'm closing it
as WORKSFORME. Please reopen if you find more info...