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ZMCIRT Vulnerability Bulletin
ZMC-2021.06.24.0630
apache2: Multiple vulnerabilities
24th June 2021
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Product: apache2
Publisher: SUSE
Operating System: SUSE
Impact/Access: Denial of Service -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-31618 CVE-2021-30641 CVE-2021-26691
CVE-2021-26690 CVE-2020-35452 CVE-2020-13950
Reference: ESB-2021.2196
ESB-2021.2170
ESB-2021.2168
ESB-2021.2153
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20212127-1
- --------------------------BEGIN INCLUDED TEXT--------------------
SUSE Security Update: Security update for apache2
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:2127-1
Rating: important
References: #1186922 #1186923 #1186924 #1187017 #1187040 #1187174
Cross-References: CVE-2020-13950 CVE-2020-35452 CVE-2021-26690 CVE-2021-26691
CVE-2021-30641 CVE-2021-31618
Affected Products:
SUSE Linux Enterprise Module for Server Applications 15-SP3
SUSE Linux Enterprise Module for Server Applications 15-SP2
SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP3
SUSE Linux Enterprise Module for Basesystem 15-SP3
SUSE Linux Enterprise Module for Basesystem 15-SP2
______________________________________________________________________________
An update that fixes 6 vulnerabilities is now available.
Description:
This update for apache2 fixes the following issues:
o fixed CVE-2021-30641 [bsc#1187174]: MergeSlashes regression
o fixed CVE-2021-31618 [bsc#1186924]: NULL pointer dereference on specially
crafted HTTP/2 request
o fixed CVE-2020-13950 [bsc#1187040]: mod_proxy NULL pointer dereference
o fixed CVE-2020-35452 [bsc#1186922]: Single zero byte stack overflow in
mod_auth_digest
o fixed CVE-2021-26690 [bsc#1186923]: mod_session NULL pointer dereference in
parser
o fixed CVE-2021-26691 [bsc#1187017]: Heap overflow in mod_session
Patch Instructions:
To install this SUSE Security Update use the SUSE recommended installation
methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
o SUSE Linux Enterprise Module for Server Applications 15-SP3:
zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP3-2021-2127=1
o SUSE Linux Enterprise Module for Server Applications 15-SP2:
zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP2-2021-2127=1
o SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP3:
zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP3-2021-2127=
1
o SUSE Linux Enterprise Module for Basesystem 15-SP3:
zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP3-2021-2127=1
o SUSE Linux Enterprise Module for Basesystem 15-SP2:
zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2021-2127=1
Package List:
o SUSE Linux Enterprise Module for Server Applications 15-SP3 (aarch64
ppc64le s390x x86_64):
apache2-debuginfo-2.4.43-3.22.1
apache2-debugsource-2.4.43-3.22.1
apache2-devel-2.4.43-3.22.1
apache2-worker-2.4.43-3.22.1
apache2-worker-debuginfo-2.4.43-3.22.1
o SUSE Linux Enterprise Module for Server Applications 15-SP3 (noarch):
apache2-doc-2.4.43-3.22.1
o SUSE Linux Enterprise Module for Server Applications 15-SP2 (aarch64
ppc64le s390x x86_64):
apache2-debuginfo-2.4.43-3.22.1
apache2-debugsource-2.4.43-3.22.1
apache2-devel-2.4.43-3.22.1
apache2-worker-2.4.43-3.22.1
apache2-worker-debuginfo-2.4.43-3.22.1
o SUSE Linux Enterprise Module for Server Applications 15-SP2 (noarch):
apache2-doc-2.4.43-3.22.1
o SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP3 (aarch64
ppc64le s390x x86_64):
apache2-debuginfo-2.4.43-3.22.1
apache2-debugsource-2.4.43-3.22.1
apache2-event-2.4.43-3.22.1
apache2-event-debuginfo-2.4.43-3.22.1
o SUSE Linux Enterprise Module for Basesystem 15-SP3 (aarch64 ppc64le s390x
x86_64):
apache2-2.4.43-3.22.1
apache2-debuginfo-2.4.43-3.22.1
apache2-debugsource-2.4.43-3.22.1
apache2-prefork-2.4.43-3.22.1
apache2-prefork-debuginfo-2.4.43-3.22.1
apache2-utils-2.4.43-3.22.1
apache2-utils-debuginfo-2.4.43-3.22.1
o SUSE Linux Enterprise Module for Basesystem 15-SP2 (aarch64 ppc64le s390x
x86_64):
apache2-2.4.43-3.22.1
apache2-debuginfo-2.4.43-3.22.1
apache2-debugsource-2.4.43-3.22.1
apache2-prefork-2.4.43-3.22.1
apache2-prefork-debuginfo-2.4.43-3.22.1
apache2-utils-2.4.43-3.22.1
apache2-utils-debuginfo-2.4.43-3.22.1
References:
o https://www.suse.com/security/cve/CVE-2020-13950.html
o https://www.suse.com/security/cve/CVE-2020-35452.html
o https://www.suse.com/security/cve/CVE-2021-26690.html
o https://www.suse.com/security/cve/CVE-2021-26691.html
o https://www.suse.com/security/cve/CVE-2021-30641.html
o https://www.suse.com/security/cve/CVE-2021-31618.html
o https://bugzilla.suse.com/1186922
o https://bugzilla.suse.com/1186923
o https://bugzilla.suse.com/1186924
o https://bugzilla.suse.com/1187017
o https://bugzilla.suse.com/1187040
o https://bugzilla.suse.com/1187174
ZMCIRT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. ZMCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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