Issued:
2020-05-06
Updated:
2020-05-06

RHSA-2020:2040 - Important: squid security update

Synopsis

Important: squid security update

Type/Severity

Security Advisory Important

Topic

An update for squid is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

Security Fix(es):

  • squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow (CVE-2019-12519)

  • squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution (CVE-2020-11945)

  • squid: parsing of header Proxy-Authentication leads to memory corruption (CVE-2019-12525)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, the squid service will be restarted automatically.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power, little endian7ppc64le
Red Hat Enterprise Linux for Power, big endian7ppc64
Red Hat Enterprise Linux for IBM z Systems7s390x
Red Hat Enterprise Linux Workstation7x86_64
Red Hat Enterprise Linux Server7x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support7x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian7ppc64le
Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian7ppc64
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)7s390x

Updated Packages

  • squid-3.5.20-15.el7_8.1.ppc64le.rpm
  • squid-sysvinit-3.5.20-15.el7_8.1.s390x.rpm
  • squid-migration-script-3.5.20-15.el7_8.1.ppc64le.rpm
  • squid-3.5.20-15.el7_8.1.src.rpm
  • squid-migration-script-3.5.20-15.el7_8.1.ppc64.rpm
  • squid-3.5.20-15.el7_8.1.ppc64.rpm
  • squid-sysvinit-3.5.20-15.el7_8.1.x86_64.rpm
  • squid-sysvinit-3.5.20-15.el7_8.1.ppc64.rpm
  • squid-3.5.20-15.el7_8.1.s390x.rpm
  • squid-migration-script-3.5.20-15.el7_8.1.x86_64.rpm
  • squid-debuginfo-3.5.20-15.el7_8.1.s390x.rpm
  • squid-migration-script-3.5.20-15.el7_8.1.s390x.rpm
  • squid-debuginfo-3.5.20-15.el7_8.1.ppc64le.rpm
  • squid-sysvinit-3.5.20-15.el7_8.1.ppc64le.rpm
  • squid-3.5.20-15.el7_8.1.x86_64.rpm
  • squid-debuginfo-3.5.20-15.el7_8.1.ppc64.rpm
  • squid-debuginfo-3.5.20-15.el7_8.1.x86_64.rpm

Fixes

CVEs

References

Additional information