-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ________________________________________________________________________ OpenPKG Security Advisory The OpenPKG Project http://www.openpkg.org/security.html http://www.openpkg.org openpkg-security@xxxxxxxxxxx openpkg@xxxxxxxxxxx OpenPKG-SA-2004.048 29-Oct-2004 ________________________________________________________________________ Package: squid (option "with_snmp yes" only) Vulnerability: denial of service OpenPKG Specific: no Affected Releases: Affected Packages: Corrected Packages: OpenPKG CURRENT <= squid-2.5.6-20040913 >= squid-2.5.7-20041012 OpenPKG 2.2 none N.A. OpenPKG 2.1 <= squid-2.5.6-2.1.0 >= squid-2.5.6-2.1.1 Dependent Packages: none Description: According to an iDEFENSE security advisory [0], a denial of service (DoS) vulnerability exists in the Squid [1] web caching proxy [1]. The "asn_parse_header" function in the SNMP module of Squid before version 2.4.STABLE7 allows remote attackers to cause a denial of service (server restart) via certain SNMP packets with negative length fields that causes a memory allocation error. The Common Vulnerabilities and Exposures (CVE) project assigned the id CAN-2004-0918 [2] to the problem. Please check whether you are affected by running "<prefix>/bin/rpm -q squid" and "<prefix>/bin/rpm -qi squid | grep with_snmp". If you have the "squid" package with option "with_snmp" installed and its version is affected (see above), we recommend that you immediately upgrade (see Solution) [3][4]. Solution: Select the updated source RPM appropriate for your OpenPKG release [5], fetch it from the OpenPKG FTP service [6] or a mirror location, verify its integrity [7], build a corresponding binary RPM from it [3] and update your OpenPKG installation by applying the binary RPM [4]. For the previous release OpenPKG 2.1, perform the following operations to permanently fix the security problem (for other releases adjust accordingly). $ ftp ftp.openpkg.org ftp> bin ftp> cd release/2.1/UPD ftp> get squid-2.5.6-2.1.1.src.rpm ftp> bye $ <prefix>/bin/openpkg rpm -v --checksig squid-2.5.6-2.1.1.src.rpm $ <prefix>/bin/openpkg rpm --rebuild squid-2.5.6-2.1.1.src.rpm $ su - # <prefix>/bin/openpkg rpm -Fvh <prefix>/RPM/PKG/squid-2.5.6-2.1.1.*.rpm ________________________________________________________________________ References: [0] http://www.idefense.com/application/poi/display?id=152 [1] http://www.squid-cache.org/ [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0918 [3] http://www.openpkg.org/tutorial.html#regular-source [4] http://www.openpkg.org/tutorial.html#regular-binary [5] ftp://ftp.openpkg.org/release/2.1/UPD/squid-2.5.6-2.1.1.src.rpm [6] ftp://ftp.openpkg.org/release/2.1/UPD/ [7] http://www.openpkg.org/security.html#signature ________________________________________________________________________ For security reasons, this advisory was digitally signed with the OpenPGP public key "OpenPKG <openpkg@xxxxxxxxxxx>" (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. ________________________________________________________________________ -----BEGIN PGP SIGNATURE----- Comment: OpenPKG <openpkg@xxxxxxxxxxx> iD8DBQFBgllNgHWT4GPEy58RAuOuAJ0aemAHXPo9pTKgOh8OtW/J/xihYwCfdW01 zpDwYACYJT+WD2p+gJDCwmY= =GmCs -----END PGP SIGNATURE-----
