[squid-users] [squid-announce] Squid 5.2 is available

[Amos Jeffries]

The Squid HTTP Proxy team is very pleased to announce the
availability of the Squid-5.2 release!


This release is a security release resolving several
vulnerabilities and bugs found in the prior Squid releases.


The major changes to be aware of:

  * SQUID-2020:12 Out-Of-Bounds memory access in WCCPv2
    (CVE-2021-28116 aka ZDI-CAN-11610)

  Due to an out of bounds memory access Squid is vulnerable to an
  information leak vulnerability when processing WCCPv2 messages.

  This problem allows a WCCPv2 sender to corrupt Squids list of
  known WCCP routers and divert client traffic to attacker
  controlled routers.

  This attack is limited to Squid proxy with WCCPv2 enabled and
  IP spoofing of a router IP address configured as trusted in
  squid.conf.


  * SQUID-2021:6 Improper Certificate Validation of TLS server
    certificates
    (CVE-2021-41611)

  When validating an origin server or peer certificate, Squid may
  incorrectly classify certain certificates as trusted.

  This problem allows a remote server to obtain security trust
  when the trust is not valid. This indication of trust may be
  passed along to clients allowing access to unsafe or hijacked
  services.

  This problem is guaranteed to occur when multiple CA have
  signed the TLS server certificate. It may also occur in cases
  of broken server certificate chains.


  * Bug 4922: Improve ftp://... filename extraction

  Since 3.5 Squid has incorrectly truncated FTP downloads when
  the transfer is made in ASCII mode (with ';type=' argument).
  This release can be expected to work when downloading from all
  FTP servers.


  * Bug 5164: a copy-paste typo in HttpHdrCc::hasMinFresh()

  This bug shows up as incorrect HIT and MISS results when
  caching responses from a server using Cache-Control:min-fresh.


   All users of Squid are encouraged to upgrade as soon as
   possible.


See the ChangeLog for the full list of changes in this and
earlier releases.

Please refer to the release notes at
http://www.squid-cache.org/Versions/v5/RELEASENOTES.html
when you are ready to make the switch to Squid-5

This new release can be downloaded from our HTTP or FTP servers

   http://www.squid-cache.org/Versions/v5/
   ftp://ftp.squid-cache.org/pub/squid/
   ftp://ftp.squid-cache.org/pub/archive/5/

or the mirrors. For a list of mirror sites see

   http://www.squid-cache.org/Download/http-mirrors.html
   http://www.squid-cache.org/Download/mirrors.html

If you encounter any issues with this release please file a bug
report.
   https://bugs.squid-cache.org/


Amos Jeffries
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