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Hash: SHA256

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

Synopsis:          Moderate: httpd:2.4 security, bug fix, and enhancement update
Advisory ID:       RHSA-2021:4257-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:4257
Issue date:        2021-11-09
CVE Names:         CVE-2021-26690 CVE-2021-30641 
====================================================================
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: NULL pointer dereference when parsing Cookie header
(CVE-2021-26690)

* httpd: Unexpected URL matching with 'MergeSlashes OFF' (CVE-2021-30641)

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

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

1905613 - mod_ssl does not like valid certificate chain
1934741 - Apache trademark update - new logo
1935742 - [RFE] backport samesite/httponly/secure flags for usertrack
1937334 - SSLProtocol with based virtual hosts
1952557 - mod_proxy_wstunnel.html is a malformed XML
1966729 - CVE-2021-26690 httpd: mod_session: NULL pointer dereference when parsing Cookie header
1966743 - CVE-2021-30641 httpd: Unexpected URL matching with 'MergeSlashes OFF'

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm

noarch:
httpd-filesystem-2.4.37-41.module+el8.5.0+11772+c8e0c271.noarch.rpm
httpd-manual-2.4.37-41.module+el8.5.0+11772+c8e0c271.noarch.rpm

ppc64le:
httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm

s390x:
httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm

x86_64:
httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2021-26690
https://access.redhat.com/security/cve/CVE-2021-30641
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 . More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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RedHat: RHSA-2021-4257:03 Moderate: httpd:2.4 security, bug fix,

An update for the httpd:2.4 module is now available for Red Hat Enterprise Linux 8

Summary

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.
Security Fix(es):
* httpd: mod_session: NULL pointer dereference when parsing Cookie header (CVE-2021-26690)
* httpd: Unexpected URL matching with 'MergeSlashes OFF' (CVE-2021-30641)
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.



Summary


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.

References

https://access.redhat.com/security/cve/CVE-2021-26690 https://access.redhat.com/security/cve/CVE-2021-30641 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/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
noarch: httpd-filesystem-2.4.37-41.module+el8.5.0+11772+c8e0c271.noarch.rpm httpd-manual-2.4.37-41.module+el8.5.0+11772+c8e0c271.noarch.rpm
ppc64le: httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
s390x: httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
x86_64: httpd-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm httpd-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm httpd-devel-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm httpd-tools-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm httpd-tools-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm mod_session-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm mod_ssl-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.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/


Severity
Advisory ID: RHSA-2021:4257-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4257
Issued Date: : 2021-11-09
CVE Names: CVE-2021-26690 CVE-2021-30641

Topic

An update for the httpd:2.4 module is now available for Red Hat EnterpriseLinux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.


Topic


 

Relevant Releases Architectures

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


Bugs Fixed

1905613 - mod_ssl does not like valid certificate chain

1934741 - Apache trademark update - new logo

1935742 - [RFE] backport samesite/httponly/secure flags for usertrack

1937334 - SSLProtocol with based virtual hosts

1952557 - mod_proxy_wstunnel.html is a malformed XML

1966729 - CVE-2021-26690 httpd: mod_session: NULL pointer dereference when parsing Cookie header

1966743 - CVE-2021-30641 httpd: Unexpected URL matching with 'MergeSlashes OFF'


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