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Red Hat Security Advisory 2021-1809-01

Red Hat Security Advisory 2021-1809-01
Posted May 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1809-01 - The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server. Issues addressed include a buffer overflow vulnerability.

tags | advisory, web, overflow
systems | linux, redhat
advisories | CVE-2018-17199, CVE-2020-11984, CVE-2020-11993
SHA-256 | 508be733c9b8a0a330ff51556fec043732a6fee5068c679d618e04abd920e542

Red Hat Security Advisory 2021-1809-01

Change Mirror Download
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Hash: SHA256

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

Synopsis: Moderate: httpd:2.4 security, bug fix, and enhancement update
Advisory ID: RHSA-2021:1809-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1809
Issue date: 2021-05-18
CVE Names: CVE-2018-17199 CVE-2020-11984 CVE-2020-11993
====================================================================
1. Summary:

An update for the httpd:2.4 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, noarch, ppc64le, s390x, x86_64

3. Description:

The httpd packages provide the Apache HTTP Server, a powerful, efficient,
and extensible web server.

Security Fix(es):

* httpd: mod_session_cookie does not respect expiry time (CVE-2018-17199)

* httpd: mod_proxy_uwsgi buffer overflow (CVE-2020-11984)

* httpd: mod_http2 concurrent pool usage (CVE-2020-11993)

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 8.4 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 the updated packages, the httpd daemon will be restarted
automatically.

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

1651376 - centralizing default index.html for httpd
1668493 - CVE-2018-17199 httpd: mod_session_cookie does not respect expiry time
1680118 - unorderly connection close when client attempts renegotiation
1847585 - mod_ldap: High CPU usage at apr_ldap_rebind_remove()
1866563 - CVE-2020-11984 httpd: mod_proxy_uwsgi buffer overflow
1866564 - CVE-2020-11993 httpd: mod_http2 concurrent pool usage
1872828 - httpd: typo in htpasswd, contained in httpd-tools package
1875844 - mod_cgid takes CGIDScriptTimeout x 2 seconds for timeout
1891594 - only one url is displayed using "htcacheclean -p . -A" when there are >= 2 files in one subdirectory
1891829 - mod_proxy_hcheck Doesn't perform checks when in a balancer
1918741 - Thousands of /tmp/modproxy.tmp.* files created by apache

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.src.rpm
mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.src.rpm
mod_md-2.0.8-8.module+el8.3.0+6814+67d1e611.src.rpm

aarch64:
httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
httpd-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
httpd-debugsource-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
httpd-devel-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
httpd-tools-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
httpd-tools-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.aarch64.rpm
mod_http2-debuginfo-1.15.7-3.module+el8.4.0+8625+d397f3da.aarch64.rpm
mod_http2-debugsource-1.15.7-3.module+el8.4.0+8625+d397f3da.aarch64.rpm
mod_ldap-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_ldap-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_md-2.0.8-8.module+el8.3.0+6814+67d1e611.aarch64.rpm
mod_md-debuginfo-2.0.8-8.module+el8.3.0+6814+67d1e611.aarch64.rpm
mod_md-debugsource-2.0.8-8.module+el8.3.0+6814+67d1e611.aarch64.rpm
mod_proxy_html-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_proxy_html-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_session-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_session-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_ssl-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm
mod_ssl-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.aarch64.rpm

noarch:
httpd-filesystem-2.4.37-39.module+el8.4.0+9658+b87b2deb.noarch.rpm
httpd-manual-2.4.37-39.module+el8.4.0+9658+b87b2deb.noarch.rpm

ppc64le:
httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
httpd-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
httpd-debugsource-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
httpd-devel-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
httpd-tools-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
httpd-tools-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.ppc64le.rpm
mod_http2-debuginfo-1.15.7-3.module+el8.4.0+8625+d397f3da.ppc64le.rpm
mod_http2-debugsource-1.15.7-3.module+el8.4.0+8625+d397f3da.ppc64le.rpm
mod_ldap-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_ldap-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_md-2.0.8-8.module+el8.3.0+6814+67d1e611.ppc64le.rpm
mod_md-debuginfo-2.0.8-8.module+el8.3.0+6814+67d1e611.ppc64le.rpm
mod_md-debugsource-2.0.8-8.module+el8.3.0+6814+67d1e611.ppc64le.rpm
mod_proxy_html-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_proxy_html-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_session-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_session-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_ssl-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm
mod_ssl-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.ppc64le.rpm

s390x:
httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
httpd-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
httpd-debugsource-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
httpd-devel-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
httpd-tools-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
httpd-tools-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.s390x.rpm
mod_http2-debuginfo-1.15.7-3.module+el8.4.0+8625+d397f3da.s390x.rpm
mod_http2-debugsource-1.15.7-3.module+el8.4.0+8625+d397f3da.s390x.rpm
mod_ldap-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_ldap-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_md-2.0.8-8.module+el8.3.0+6814+67d1e611.s390x.rpm
mod_md-debuginfo-2.0.8-8.module+el8.3.0+6814+67d1e611.s390x.rpm
mod_md-debugsource-2.0.8-8.module+el8.3.0+6814+67d1e611.s390x.rpm
mod_proxy_html-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_proxy_html-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_session-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_session-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_ssl-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm
mod_ssl-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.s390x.rpm

x86_64:
httpd-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
httpd-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
httpd-debugsource-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
httpd-devel-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
httpd-tools-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
httpd-tools-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_http2-1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64.rpm
mod_http2-debuginfo-1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64.rpm
mod_http2-debugsource-1.15.7-3.module+el8.4.0+8625+d397f3da.x86_64.rpm
mod_ldap-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_ldap-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_md-2.0.8-8.module+el8.3.0+6814+67d1e611.x86_64.rpm
mod_md-debuginfo-2.0.8-8.module+el8.3.0+6814+67d1e611.x86_64.rpm
mod_md-debugsource-2.0.8-8.module+el8.3.0+6814+67d1e611.x86_64.rpm
mod_proxy_html-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_proxy_html-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_session-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_session-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_ssl-2.4.37-39.module+el8.4.0+9658+b87b2deb.x86_64.rpm
mod_ssl-debuginfo-2.4.37-39.module+el8.4.0+9658+b87b2deb.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-2018-17199
https://access.redhat.com/security/cve/CVE-2020-11984
https://access.redhat.com/security/cve/CVE-2020-11993
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_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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