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Vulnerability of Squid cache: overload via Cache Digest Response

Synthesis of the vulnerability 

An attacker can trigger an overload via Cache Digest Response of Squid cache, in order to trigger a denial of service.
Vulnerable products: Debian, Fedora, openSUSE Leap, Solaris, RHEL, Squid, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 24/08/2020.
Références of this bulletin: bulletinoct2020, CVE-2020-24606, DLA-2394-1, DSA-4751-1, FEDORA-2020-63f3bd656e, FEDORA-2020-73af8655eb, openSUSE-SU-2020:1346-1, openSUSE-SU-2020:1369-1, RHSA-2020:4082-01, RHSA-2020:4743-01, SQUID-2020:9, SUSE-SU-2020:14590-1, SUSE-SU-2020:2442-1, SUSE-SU-2020:2443-1, SUSE-SU-2020:2471-1, USN-4477-1, USN-4551-1, VIGILANCE-VUL-33138.

Description of the vulnerability 

An attacker can trigger an overload via Cache Digest Response of Squid cache, in order to trigger a denial of service.
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This weakness note impacts software or systems such as Debian, Fedora, openSUSE Leap, Solaris, RHEL, Squid, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this threat note is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer weakness.

Solutions for this threat 

Squid cache: version 4.13.
The version 4.13 is fixed:
  http://www.squid-cache.org/Versions/v4/
  ftp://ftp.squid-cache.org/pub/squid/
  ftp://ftp.squid-cache.org/pub/archive/4/

Debian 10: new squid packages.
New packages are available:
  Debian 10: squid 4.6-1+deb10u4

Debian 9: new squid3 packages.
New packages are available:
  Debian 9: squid3 3.5.23-5+deb9u5

Fedora 31-32: new squid packages.
New packages are available:
  Fedora 31: squid 4.13-1.fc31
  Fedora 32: squid 4.13-1.fc32

openSUSE Leap 15.1: new squid packages.
New packages are available:
  openSUSE Leap 15.1: squid 4.13-lp151.2.24.1

openSUSE Leap 15.2: new squid packages.
New packages are available:
  openSUSE Leap 15.2: squid 4.13-lp152.2.6.1

Oracle Solaris: patch for third party software of October 2020 v1.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7.9: new squid packages.
New packages are available:
  RHEL 7.9: squid 3.5.20-17.el7_9.4

RHEL 8: new squid-4 module.
The following module is updated:
  RHEL 8 Module: squid:4

SUSE LE 11 SP3-4: new squid3 packages.
New packages are available:
  SUSE LE 11 SP3: squid3 3.1.23-8.16.37.15.1
  SUSE LE 11 SP4: squid3 3.1.23-8.16.37.15.1

SUSE LE 12: new squid packages.
New packages are available:
  SUSE LE 12 SP2: squid 3.5.21-26.32.1
  SUSE LE 12 SP3: squid 3.5.21-26.32.1
  SUSE LE 12 SP4: squid 3.5.21-26.32.1

SUSE LE 12 SP5: new squid packages.
New packages are available:
  SUSE LE 12 SP5: squid 4.13-4.15.1

SUSE LE 15: new squid packages.
New packages are available:
  SUSE LE 15 RTM: squid 4.13-5.23.1
  SUSE LE 15 SP1: squid 4.13-5.23.1
  SUSE LE 15 SP2: squid 4.13-5.23.1

Ubuntu 20.04: new squid packages.
New packages are available:
  Ubuntu 20.04 LTS: squid 4.10-1ubuntu1.2

Ubuntu: new squid packages.
New packages are available:
  Ubuntu 18.04 LTS: squid 3.5.27-1ubuntu1.9
  Ubuntu 16.04 LTS: squid 3.5.12-1ubuntu7.15
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