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Vulnerability of Squid: integer overflow via Digest Authentication Single Quote

Synthesis of the vulnerability 

An attacker can trigger an integer overflow via Digest Authentication Single Quote of Squid, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Debian, openSUSE Leap, Solaris, RHEL, Squid, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 12/07/2019.
Références of this bulletin: CERTFR-2019-AVI-332, CVE-2019-12525, DLA-1858-1, DLA-2278-1, DLA-2278-2, DLA-2278-3, DSA-4507-1, openSUSE-SU-2019:2540-1, openSUSE-SU-2019:2541-1, RHSA-2020:2040-01, SQUID-2019:3, SUSE-SU-2019:2089-1, SUSE-SU-2019:2975-1, SUSE-SU-2020:14460-1, USN-4065-1, USN-4065-2, VIGILANCE-VUL-29760.

Description of the vulnerability 

An attacker can trigger an integer overflow via Digest Authentication Single Quote of Squid, in order to trigger a denial of service, and possibly to run code.
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This weakness impacts software or systems such as Debian, openSUSE Leap, Solaris, RHEL, Squid, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this vulnerability announce is medium.

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

An attacker with a expert ability can exploit this threat bulletin.

Solutions for this threat 

Squid cache: version 4.8.
The version 4.8 is fixed:
  http://www.squid-cache.org/Versions/v4/

Squid: patch for Digest Authentication Single Quote.
A patch is available:
  Squid 3.5: http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-ec0d0f39cf28da14eead0ba5e777e95855bc2f67.patch
  Squid 4: http://www.squid-cache.org/Versions/v4/changesets/squid-4-409956536647b3a05ee1e367424a24ae6b8f13fd.patch

Debian 10: new squid packages.
New packages are available:
  Debian 10: squid 4.6-1+deb10u1

Debian 8: new squid3 packages.
New packages are available:
  Debian 8: squid3 3.4.8-6+deb8u8

Debian 9: new squid3 packages.
New packages are available:
  Debian 9: squid3 3.5.23-5+deb9u4

openSUSE Leap 15: new squid packages (22/11/2019).
New packages are available:
  openSUSE Leap 15.0: squid 4.9-lp150.13.1
  openSUSE Leap 15.1: squid 4.9-lp151.2.7.1

Oracle Solaris: patch for third party software of October 2019 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7: new squid packages.
New packages are available:
  RHEL 7.8: squid 3.5.20-15.el7_8.1

SUSE LE 11 SP3-4: new squid3 packages.
New packages are available:
  SUSE LE 11 SP3: squid3 3.1.23-8.16.37.12.1
  SUSE LE 11 SP4: squid3 3.1.23-8.16.37.12.1

SUSE LE 12: new squid packages.
New packages are available:
  SUSE LE 12 SP2: squid 3.5.21-26.17.1
  SUSE LE 12 SP3: squid 3.5.21-26.17.1
  SUSE LE 12 SP4: squid 3.5.21-26.17.1

SUSE LE 15: new squid packages (15/11/2019).
New packages are available:
  SUSE LE 15 RTM: squid 4.9-5.11.1
  SUSE LE 15 SP1: squid 4.9-5.11.1

Ubuntu 12.04: new squid3 packages.
New packages are available:
  Ubuntu 12.04 ESM: squid3 3.1.19-1ubuntu3.12.04.10

Ubuntu: new squid packages.
New packages are available:
  Ubuntu 19.04: squid 4.4-1ubuntu2.2
  Ubuntu 18.04 LTS: squid3 3.5.27-1ubuntu1.3
  Ubuntu 16.04 LTS: squid3 3.5.12-1ubuntu7.8
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