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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: squid:4 security and bug fix update
Advisory ID:       RHSA-2022:1939-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2022:1939
Issue date:        2022-05-10
CVE Names:         CVE-2021-28116 
=====================================================================

1. Summary:

An update for the squid:4 module is now available for Red Hat Enterprise
Linux 8.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

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

Security Fix(es):

* squid: out-of-bounds read in WCCP protocol data may lead to information
disclosure (CVE-2021-28116)

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.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.6 Release Notes linked from the References section.

4. 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.

5. Bugs fixed (https://bugzilla.redhat.com/):

1939939 - CVE-2021-28116 squid: out-of-bounds read in WCCP protocol data may lead to information disclosure
2006121 - SQUID shortens FTP Link wrong that contains a semi-colon and as a result is not able to download zip file.CODE 404 TO CLIENT)

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.src.rpm
squid-4.15-3.module+el8.6.0+14176+9782b8ab.src.rpm

aarch64:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.aarch64.rpm
squid-4.15-3.module+el8.6.0+14176+9782b8ab.aarch64.rpm
squid-debuginfo-4.15-3.module+el8.6.0+14176+9782b8ab.aarch64.rpm
squid-debugsource-4.15-3.module+el8.6.0+14176+9782b8ab.aarch64.rpm

ppc64le:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le.rpm
squid-4.15-3.module+el8.6.0+14176+9782b8ab.ppc64le.rpm
squid-debuginfo-4.15-3.module+el8.6.0+14176+9782b8ab.ppc64le.rpm
squid-debugsource-4.15-3.module+el8.6.0+14176+9782b8ab.ppc64le.rpm

s390x:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.s390x.rpm
squid-4.15-3.module+el8.6.0+14176+9782b8ab.s390x.rpm
squid-debuginfo-4.15-3.module+el8.6.0+14176+9782b8ab.s390x.rpm
squid-debugsource-4.15-3.module+el8.6.0+14176+9782b8ab.s390x.rpm

x86_64:
libecap-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
libecap-debuginfo-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
libecap-debugsource-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
libecap-devel-1.0.1-2.module+el8.1.0+4044+36416a77.x86_64.rpm
squid-4.15-3.module+el8.6.0+14176+9782b8ab.x86_64.rpm
squid-debuginfo-4.15-3.module+el8.6.0+14176+9782b8ab.x86_64.rpm
squid-debugsource-4.15-3.module+el8.6.0+14176+9782b8ab.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-28116
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.6_release_notes/

8. Contact:

The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2022 Red Hat, Inc.
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