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AUSCERT External Security Bulletin Redistribution
ESB-2021.3805
squid:4 security, bug fix, and enhancement update
10 November 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: squid:4
Publisher: Red Hat
Operating System: Red Hat
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-33620 CVE-2021-31808 CVE-2021-31807
CVE-2021-31806 CVE-2021-28662 CVE-2021-28652
CVE-2021-28651
Reference: ESB-2021.2124
ESB-2021.2114
ESB-2021.1944
ESB-2021.1583
Original Bulletin:
https://access.redhat.com/errata/RHSA-2021:4292
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Red Hat Security Advisory
Synopsis: Moderate: squid:4 security, bug fix, and enhancement update
Advisory ID: RHSA-2021:4292-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4292
Issue date: 2021-11-09
CVE Names: CVE-2021-28651 CVE-2021-28652 CVE-2021-28662
CVE-2021-31806 CVE-2021-31807 CVE-2021-31808
CVE-2021-33620
=====================================================================
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.
The following packages have been upgraded to a later upstream version:
squid (4.15). (BZ#1964384)
Security Fix(es):
* squid: denial of service in URN processing (CVE-2021-28651)
* squid: denial of service issue in Cache Manager (CVE-2021-28652)
* squid: denial of service in HTTP response processing (CVE-2021-28662)
* squid: improper input validation in HTTP Range header (CVE-2021-31806)
* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)
* squid: integer overflow in HTTP Range header (CVE-2021-31808)
* squid: denial of service in HTTP response processing (CVE-2021-33620)
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 8.5 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/):
1959537 - CVE-2021-33620 squid: denial of service in HTTP response processing
1962243 - CVE-2021-28651 squid: denial of service in URN processing
1962246 - CVE-2021-28652 squid: denial of service issue in Cache Manager
1962254 - CVE-2021-28662 squid: denial of service in HTTP response processing
1962595 - CVE-2021-31806 squid: improper input validation in HTTP Range header
1962597 - CVE-2021-31807 squid: incorrect memory management in HTTP Range header
1962599 - CVE-2021-31808 squid: integer overflow in HTTP Range header
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-4.15-1.module+el8.5.0+11469+24c223d9.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-4.15-1.module+el8.5.0+11469+24c223d9.aarch64.rpm
squid-debuginfo-4.15-1.module+el8.5.0+11469+24c223d9.aarch64.rpm
squid-debugsource-4.15-1.module+el8.5.0+11469+24c223d9.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-4.15-1.module+el8.5.0+11469+24c223d9.ppc64le.rpm
squid-debuginfo-4.15-1.module+el8.5.0+11469+24c223d9.ppc64le.rpm
squid-debugsource-4.15-1.module+el8.5.0+11469+24c223d9.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-4.15-1.module+el8.5.0+11469+24c223d9.s390x.rpm
squid-debuginfo-4.15-1.module+el8.5.0+11469+24c223d9.s390x.rpm
squid-debugsource-4.15-1.module+el8.5.0+11469+24c223d9.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-4.15-1.module+el8.5.0+11469+24c223d9.x86_64.rpm
squid-debuginfo-4.15-1.module+el8.5.0+11469+24c223d9.x86_64.rpm
squid-debugsource-4.15-1.module+el8.5.0+11469+24c223d9.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-2021-28651
https://access.redhat.com/security/cve/CVE-2021-28652
https://access.redhat.com/security/cve/CVE-2021-28662
https://access.redhat.com/security/cve/CVE-2021-31806
https://access.redhat.com/security/cve/CVE-2021-31807
https://access.redhat.com/security/cve/CVE-2021-31808
https://access.redhat.com/security/cve/CVE-2021-33620
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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