Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2021.2968
USN-5051-4: OpenSSL regression
2 September 2021
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: OpenSSL
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-3712
Reference: ESB-2021.2895
ESB-2021.2864
ESB-2021.2861
Original Bulletin:
https://ubuntu.com/security/notices/USN-5051-4
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-5051-4: OpenSSL regression
01 September 2021
USN-5051-2 introduced a regression in OpenSSL.
Releases
o Ubuntu 14.04 ESM
Packages
o openssl - Secure Socket Layer (SSL) cryptographic library and tools
Details
USN-5051-2 introduced a regression in OpenSSL that affected only Ubuntu 14.04
ESM.
This update fix the regression.
Original advisory details:
Ingo Schwarze discovered that OpenSSL incorrectly handled certain ASN.1
strings. A remote attacker could use this issue to cause OpenSSL to crash,
resulting in a denial of service, or possibly obtain sensitive information.
( CVE-2021-3712 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 14.04
o libssl1.0.0 - 1.0.1f-1ubuntu2.27+esm4
Available with UA Infra or UA Desktop
After a standard system update you need to reboot your computer to make
all the necessary changes.
References
o https://launchpad.net/bugs/1942357
- --------------------------END INCLUDED TEXT--------------------
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/
===========================================================================
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.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=wKe2
-----END PGP SIGNATURE-----