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Home > Products and services > CSIRTUK advisories > Advisories archive > September 2005 > OpenPKG - squid [OpenPKG-SA-2005.021]

September 2005

OpenPKG - squid [OpenPKG-SA-2005.021]

ID: 00788
Ref: 734/05
Date: 13 September 2005:15:50:20
Version: 1

Title: OpenPKG - squid [OpenPKG-SA-2005.021]
Abstract: Two Denial of Service (DoS) security issues were discovered in the Squid [0] Internet proxy
Vendors affected: OpenPKG
Operating systems affected: OpenPKG
Applications affected: OpenPKG


Title
=====
OpenPKG - squid [OpenPKG-SA-2005.021]


Detail
======

- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

________________________________________________________________________

OpenPKG Security Advisory The OpenPKG Project
http://www.openpkg.org/security.html http://www.openpkg.org
openpkg-security@openpkg.org openpkg@openpkg.org
OpenPKG-SA-2005.021 10-Sep-2005
________________________________________________________________________

Package: squid
Vulnerability: denial of service
OpenPKG Specific: no

Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= squid-2.5.10-20050709 >= squid-2.5.10-20050910
OpenPKG 2.4 <= squid-2.5.10-2.4.0 >= squid-2.5.10-2.4.1
OpenPKG 2.3 <= squid-2.5.9-2.3.0 >= squid-2.5.9-2.3.1

Dependent Packages: none

Description:
Two Denial of Service (DoS) security issues were discovered in the
Squid [0] Internet proxy. The first DoS is possible via certain
aborted requests that trigger an assertion error related to
"STORE_PENDING". The Common Vulnerabilities and Exposures (CVE)
project assigned the id CAN-2005-2794 [1] to the problem. The second
problem allows remote attackers to cause a DoS via certain crafted
requests and SSL timeouts. The Common Vulnerabilities and Exposures
(CVE) project assigned the id CAN-2005-2796 [2] to the problem.

Please check whether you are affected by running "/bin/openpkg
rpm -q squid". If you have the "squid" package installed and its
version is affected (see above), we recommend that you immediately
upgrade it (see Solution) [3][4].

Solution:
Select the updated source RPM appropriate for your OpenPKG release
[5][6], fetch it from the OpenPKG FTP service [7][8] or a mirror
location, verify its integrity [9], build a corresponding binary RPM
from it [3] and update your OpenPKG installation by applying the
binary RPM [4]. For the most recent release OpenPKG 2.4, perform the
following operations to permanently fix the security problem (for
other releases adjust accordingly).

$ ftp ftp.openpkg.org
ftp> bin
ftp> cd release/2.4/UPD
ftp> get squid-2.5.10-2.4.1.src.rpm
ftp> bye
$ /bin/openpkg rpm -v --checksig squid-2.5.10-2.4.1.src.rpm
$ /bin/openpkg rpm --rebuild squid-2.5.10-2.4.1.src.rpm
$ su -
# /bin/openpkg rpm -Fvh /RPM/PKG/squid-2.5.10-2.4.1.*.rpm
________________________________________________________________________

References:
[0] http://www.squid-cache.org/
[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2794
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2796
[3] http://www.openpkg.org/tutorial.html#regular-source
[4] http://www.openpkg.org/tutorial.html#regular-binary
[5] ftp://ftp.openpkg.org/release/2.4/UPD/squid-2.5.10-2.4.1.src.rpm
[6] ftp://ftp.openpkg.org/release/2.3/UPD/squid-2.5.9-2.3.1.src.rpm
[7] ftp://ftp.openpkg.org/release/2.4/UPD/
[8] ftp://ftp.openpkg.org/release/2.3/UPD/
[9] http://www.openpkg.org/security.html#signature
________________________________________________________________________

For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG " (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/
for details on how to verify the integrity of this advisory.
________________________________________________________________________

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