Fedora: squid 2.5 ACL escape vulnerability
Summary
Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects. Unlike traditional
caching software, Squid handles all requests in a single,
non-blocking, I/O-driven process. Squid keeps meta data and especially
hot objects cached in RAM, caches DNS lookups, supports non-blocking
DNS lookups, and implements negative caching of failed requests.
Squid consists of a main server program squid, a Domain Name System
lookup program (dnsserver), a program for retrieving FTP data
(ftpget), and some management and client tools.
Update Information:
* Tue Mar 09 2004 Jay Fenlason <fenlason@redhat.com> 7:2.5.STABLE3-1.fc1
- Backport security fix for %00 hole. See CAN-2004-0189:
The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows
remote attackers to bypass url_regex ACLs via a URL with a NULL
("%00") characterm, which causes Squid to use only a portion of the
requested URL when comparing it against the access control lists.
- Backport security fix that adds urllogin acl type that can be used to
protect vulnerable Microsoft Internet Explorer clients.
This update can be downloaded from:
5b3bd9a972398edcacf4801ddc5718a2 SRPMS/squid-2.5.STABLE3-1.fc1.src.rpm
c48dccb3751ed519ac1189c8183540b7 i386/squid-2.5.STABLE3-1.fc1.i386.rpm
9a6eb17ff52b70020252026bb77b9279 i386/debug/squid-debuginfo-2.5.STABLE3-1.fc1.i386.rpm
6754ae8a0898506e7488975f9bb43cca x86_64/squid-2.5.STABLE3-1.fc1.x86_64.rpm
617e9faefdfc4a3fa1c9018e0ac7787f x86_64/debug/squid-debuginfo-2.5.STABLE3-1.fc1.x86_64.rpm
This update can also be installed with the Update Agent; you can
launch the Update Agent with the 'up2date' command.
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Change Log
References
Fedora Update Notification FEDORA-2004-104 2004-04-15 Name : squid Version : 2.5.STABLE3 Release : 1.fc1 Summary : The Squid proxy caching server. Description : Squid is a high-performance proxy caching server for Web clients, supporting FTP, gopher, and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups, supports non-blocking DNS lookups, and implements negative caching of failed requests. Squid consists of a main server program squid, a Domain Name System lookup program (dnsserver), a program for retrieving FTP data (ftpget), and some management and client tools.
Update Instructions
