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ZMCIRT Vulnerability Bulletin
ZMC-2022.04.16.0800
httpd:2.4: CVSS (Max): 8.1
16th March 2022
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Product: httpd:2.4
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2021-39275 CVE-2021-34798
Original Bulletin:
https://access.redhat.com/errata/RHSA-2022:0891
Comment: CVSS (Max): 8.1 CVE-2021-39275 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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Red Hat Security Advisory
Synopsis: Moderate: httpd:2.4 security update
Advisory ID: RHSA-2022:0891-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:0891
Issue date: 2022-03-15
CVE Names: CVE-2021-34798 CVE-2021-39275
=====================================================================
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: NULL pointer dereference via malformed requests (CVE-2021-34798)
* httpd: Out-of-bounds write in ap_escape_quotes() via malicious input
(CVE-2021-39275)
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.
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/):
2005119 - CVE-2021-39275 httpd: Out-of-bounds write in ap_escape_quotes() via malicious input
2005128 - CVE-2021-34798 httpd: NULL pointer dereference via malformed requests
6. Package List:
Red Hat Enterprise Linux AppStream (v. 8):
Source:
httpd-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
httpd-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
httpd-debugsource-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
httpd-devel-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
httpd-tools-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
httpd-tools-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
mod_ldap-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
mod_proxy_html-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
mod_session-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
mod_session-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
mod_ssl-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
mod_ssl-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.aarch64.rpm
noarch:
httpd-filesystem-2.4.37-43.module+el8.5.0+14370+51c6d843.2.noarch.rpm
httpd-manual-2.4.37-43.module+el8.5.0+14370+51c6d843.2.noarch.rpm
ppc64le:
httpd-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
httpd-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
httpd-debugsource-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
httpd-devel-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
httpd-tools-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
httpd-tools-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
mod_ldap-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
mod_proxy_html-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
mod_session-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
mod_session-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
mod_ssl-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
mod_ssl-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.ppc64le.rpm
s390x:
httpd-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
httpd-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
httpd-debugsource-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
httpd-devel-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
httpd-tools-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
httpd-tools-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
mod_ldap-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
mod_proxy_html-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
mod_session-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
mod_session-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
mod_ssl-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
mod_ssl-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.s390x.rpm
x86_64:
httpd-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
httpd-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
httpd-debugsource-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
httpd-devel-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
httpd-tools-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
httpd-tools-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
mod_ldap-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
mod_proxy_html-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
mod_session-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
mod_session-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
mod_ssl-2.4.37-43.module+el8.5.0+14370+51c6d843.2.x86_64.rpm
mod_ssl-debuginfo-2.4.37-43.module+el8.5.0+14370+51c6d843.2.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-2021-34798
https://access.redhat.com/security/cve/CVE-2021-39275
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
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