Squid 3.3


Squid-3.3 is CONSIDERED DANGEROUS as the security people say. Due to unfixed vulnerabilities CVE-2014-7141, CVE-2014-7142 and CVE-2014-6270 and any other recently discovered issues.

Dec 2013

the Squid-3.3 series became DEPRECATED with the release of Squid-3.4 series

Feb 2013

Released for production use.

The features have been set and large code changes are reserved for later versions.

Additions are limited to:

  • Security fixes
  • Stability fixes
  • small optimizations
  • Documentation updates
  • Porting of Squid-2.7 feature regressions
  • Bug fixes

Features ported from 2.7 in this release:

  • external acl %ACL and %DATA tags (from 3.3.5)

Basic new features in 3.3:

The intention with this series is to improve the upgrade path and concentrate on further portability improvements. Squid-2.7 missing features are listed as regressions in http://www.squid-cache.org/Versions/v3/3.3/RELEASENOTES.html#s6

Packages of squid 3.3 source code are available at http://www.squid-cache.org/Versions/v3/3.3/

Security Advisories

See our Advisories list.

Open Bugs

Squid-3.3 default config

From 3.3 a few performance improvements have been done. The manager regex ACLs have been moved after the DoS and protocol smuggling attack protections.

  • /!\

    This minimal configuration does not work with versions earlier than 3.2 which are missing special cleanup done to the code.

http_port 3128

refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
refresh_pattern .               0       20%     4320

acl localnet src     # RFC 1918 possible internal network
acl localnet src  # RFC 1918 possible internal network
acl localnet src # RFC 1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 443          # https

acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
acl Safe_ports port 70          # gopher
acl Safe_ports port 210         # wais
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http


http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
http_access allow localnet
http_access allow localhost
http_access deny all

Squid-3.3 (last edited 2015-02-02 15:47:44 by AmosJeffries)