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AUSCERT External Security Bulletin Redistribution
ESB-2021.2190
Security update for libxml2
21 June 2021
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AusCERT Security Bulletin Summary
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Product: libxml2
Publisher: SUSE
Operating System: SUSE
Impact/Access: Denial of Service — Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3541
Reference: ESB-2021.2175
ESB-2021.2067
ESB-2021.1849
Original Bulletin:
https://www.suse.com/support/update/announcement/2021/suse-su-20212016-1
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SUSE Security Update: Security update for libxml2
______________________________________________________________________________
Announcement ID: SUSE-SU-2021:2016-1
Rating: moderate
References: #1186015
Cross-References: CVE-2021-3541
Affected Products:
SUSE Linux Enterprise Software Development Kit 12-SP5
SUSE Linux Enterprise Server 12-SP5
______________________________________________________________________________
An update that fixes one vulnerability is now available.
Description:
This update for libxml2 fixes the following issues:
o CVE-2021-3541: Fixed exponential entity expansion attack that could bypass
all existing protection mechanisms (bsc#1186015).
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 Software Development Kit 12-SP5:
zypper in -t patch SUSE-SLE-SDK-12-SP5-2021-2016=1
o SUSE Linux Enterprise Server 12-SP5:
zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-2016=1
Package List:
o SUSE Linux Enterprise Software Development Kit 12-SP5 (aarch64 ppc64le
s390x x86_64):
libxml2-debugsource-2.9.4-46.46.1
libxml2-devel-2.9.4-46.46.1
o SUSE Linux Enterprise Server 12-SP5 (aarch64 ppc64le s390x x86_64):
libxml2-2-2.9.4-46.46.1
libxml2-2-debuginfo-2.9.4-46.46.1
libxml2-debugsource-2.9.4-46.46.1
libxml2-tools-2.9.4-46.46.1
libxml2-tools-debuginfo-2.9.4-46.46.1
python-libxml2-2.9.4-46.46.1
python-libxml2-debuginfo-2.9.4-46.46.1
python-libxml2-debugsource-2.9.4-46.46.1
o SUSE Linux Enterprise Server 12-SP5 (s390x x86_64):
libxml2-2-32bit-2.9.4-46.46.1
libxml2-2-debuginfo-32bit-2.9.4-46.46.1
o SUSE Linux Enterprise Server 12-SP5 (noarch):
libxml2-doc-2.9.4-46.46.1
References:
o https://www.suse.com/security/cve/CVE-2021-3541.html
o https://bugzilla.suse.com/1186015
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You have received this e-mail bulletin as a result of your organisation’s
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT’s members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. 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. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author’s website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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