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

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1730535 - CVE-2019-12525 squid: parsing of header Proxy-Authentication leads to memory corruption
• BZ - 1827552 - CVE-2019-12519 squid: improper check for new member in ESIExpression::Evaluate allows for stack buffer overflow
• BZ - 1827563 - CVE-2020-11945 squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution

CVEs

• CVE-2019-12519
• CVE-2019-12525
• CVE-2020-11945

References

• https://access.redhat.com/security/updates/classification/#important

Red Hat Enterprise Linux Server 7

SRPM
squid-3.5.20-15.el7_8.1.src.rpm	SHA-256: 36e58bf21d502627cb62a972e74b897299ca9550f767aa7816826930eb3c42e0
x86_64
squid-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: 4070cd5eaf3acfd83fbe9cfd8bb2fecef54f08335f8dccaee8d14d4c64b16e34
squid-debuginfo-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: f300c3536799ef8938ae0a758294404b73b503a940a461e3e07f6fd882734f06
squid-debuginfo-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: f300c3536799ef8938ae0a758294404b73b503a940a461e3e07f6fd882734f06
squid-migration-script-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: 45a34155467f53fa87ab1acde399f9e04426fd31e9be19cc8f0ed0f9c3f4c956
squid-sysvinit-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: dd8ae80950031bb368fdd41a1d28b42665a4bfada8098a63efdfef95bd6be8b7

Red Hat Enterprise Linux Workstation 7

SRPM
squid-3.5.20-15.el7_8.1.src.rpm	SHA-256: 36e58bf21d502627cb62a972e74b897299ca9550f767aa7816826930eb3c42e0
x86_64
squid-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: 4070cd5eaf3acfd83fbe9cfd8bb2fecef54f08335f8dccaee8d14d4c64b16e34
squid-debuginfo-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: f300c3536799ef8938ae0a758294404b73b503a940a461e3e07f6fd882734f06
squid-debuginfo-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: f300c3536799ef8938ae0a758294404b73b503a940a461e3e07f6fd882734f06
squid-migration-script-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: 45a34155467f53fa87ab1acde399f9e04426fd31e9be19cc8f0ed0f9c3f4c956
squid-sysvinit-3.5.20-15.el7_8.1.x86_64.rpm	SHA-256: dd8ae80950031bb368fdd41a1d28b42665a4bfada8098a63efdfef95bd6be8b7

Red Hat Enterprise Linux for IBM z Systems 7

SRPM
squid-3.5.20-15.el7_8.1.src.rpm	SHA-256: 36e58bf21d502627cb62a972e74b897299ca9550f767aa7816826930eb3c42e0
s390x
squid-3.5.20-15.el7_8.1.s390x.rpm	SHA-256: fa5b2214ca6384d423ea30737588c13a1f647c8d868288d0dc525f1c4f8adea2
squid-debuginfo-3.5.20-15.el7_8.1.s390x.rpm	SHA-256: e42ca7103ccc5a6a178402e6fa34e1fd553603ee567561d3b2ed5f69c2c18d5a
squid-debuginfo-3.5.20-15.el7_8.1.s390x.rpm	SHA-256: e42ca7103ccc5a6a178402e6fa34e1fd553603ee567561d3b2ed5f69c2c18d5a
squid-migration-script-3.5.20-15.el7_8.1.s390x.rpm	SHA-256: 862ab1a99b734d5ed5022505f9a9b3818d8f7b9d659901f5f2fb998ba71fee94
squid-sysvinit-3.5.20-15.el7_8.1.s390x.rpm	SHA-256: 699ff5e06c3828b6ace9b0da227eae8ef0b1afbc50585e1275d776e37b98e913

Red Hat Enterprise Linux for Power, big endian 7

SRPM
squid-3.5.20-15.el7_8.1.src.rpm	SHA-256: 36e58bf21d502627cb62a972e74b897299ca9550f767aa7816826930eb3c42e0
ppc64
squid-3.5.20-15.el7_8.1.ppc64.rpm	SHA-256: b0248d1ebeccb3e3e3484a79b711de02b5959cef66ae11cd0796f7fdd581d78a
squid-debuginfo-3.5.20-15.el7_8.1.ppc64.rpm	SHA-256: 6c1d52d6dc45adb7d44d158579006d38b27be541c4fb7a719589aff6bb59b8e4
squid-debuginfo-3.5.20-15.el7_8.1.ppc64.rpm	SHA-256: 6c1d52d6dc45adb7d44d158579006d38b27be541c4fb7a719589aff6bb59b8e4
squid-migration-script-3.5.20-15.el7_8.1.ppc64.rpm	SHA-256: 8f06be439fe007d7c4d0e5072d6f3dbb44a519b3525d8244f00a1a0bf3f62747
squid-sysvinit-3.5.20-15.el7_8.1.ppc64.rpm	SHA-256: 3385b5839bbb02e597efebdb9e38c2eeae48f3d644567b924d5c9ddcb8bcccd1

Red Hat Enterprise Linux for Power, little endian 7

SRPM
squid-3.5.20-15.el7_8.1.src.rpm	SHA-256: 36e58bf21d502627cb62a972e74b897299ca9550f767aa7816826930eb3c42e0
ppc64le
squid-3.5.20-15.el7_8.1.ppc64le.rpm	SHA-256: a4fc62bbfe16684eb197fe02bb849399dab24b5ce4ce8529082e4522a3e5479d
squid-debuginfo-3.5.20-15.el7_8.1.ppc64le.rpm	SHA-256: c387ff20c26b5c738ecdc65fe2ec7b89c90c52e07a08ebe83a43299d0c4f0097
squid-debuginfo-3.5.20-15.el7_8.1.ppc64le.rpm	SHA-256: c387ff20c26b5c738ecdc65fe2ec7b89c90c52e07a08ebe83a43299d0c4f0097
squid-migration-script-3.5.20-15.el7_8.1.ppc64le.rpm	SHA-256: 82575814d31bc7e9f23bd3dc6c07f49c0b54fc7832bf707eba5eda62185b3105
squid-sysvinit-3.5.20-15.el7_8.1.ppc64le.rpm	SHA-256: 43dd325afa337dcdab58e9d63be56115c8b296fb53d03f856e6ba8a5f36fe49f