Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.0312
USN-4257-1: OpenJDK vulnerabilities
29 January 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: OpenJDK
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-2659 CVE-2020-2655 CVE-2020-2654
CVE-2020-2604 CVE-2020-2601 CVE-2020-2593
CVE-2020-2590 CVE-2020-2583
Reference: ASB-2020.0028
ASB-2020.0027
ESB-2020.0300
ESB-2020.0293
Original Bulletin:
https://usn.ubuntu.com/4257-1/
- --------------------------BEGIN INCLUDED TEXT--------------------
USN-4257-1: OpenJDK vulnerabilities
28 January 2020
openjdk-8, openjdk-lts vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in OpenJDK.
Software Description
o openjdk-8 - Open Source Java implementation
o openjdk-lts - Open Source Java implementation
Details
It was discovered that OpenJDK incorrectly handled exceptions during
deserialization in BeanContextSupport. An attacker could possibly use this
issue to cause a denial of service or other unspecified impact. (CVE-2020-2583)
It was discovered that OpenJDK incorrectly validated properties of SASL
messages included in Kerberos GSSAPI. An unauthenticated remote attacker with
network access via Kerberos could possibly use this issue to insert, modify or
obtain sensitive information. (CVE-2020-2590)
It was discovered that OpenJDK incorrectly validated URLs. An attacker could
possibly use this issue to insert, edit or obtain sensitive information.
(CVE-2020-2593)
It was discovered that OpenJDK Security component still used MD5 algorithm. A
remote attacker could possibly use this issue to obtain sensitive information.
(CVE-2020-2601)
It was discovered that OpenJDK incorrectly handled the application of
serialization filters. An attacker could possibly use this issue to bypass the
intended filter during serialization. (CVE-2020-2604)
Bo Zhang and Long Kuan discovered that OpenJDK incorrectly handled X.509
certificates. An attacker could possibly use this issue to cause a denial of
service. (CVE-2020-2654)
Bengt Jonsson, Juraj Somorovsky, Kostis Sagonas, Paul Fiterau Brostean and
Robert Merget discovered that OpenJDK incorrectly handled CertificateVerify TLS
handshake messages. A remote attacker could possibly use this issue to insert,
edit or obtain sensitive information. This issue only affected OpenJDK 11.
(CVE-2020-2655)
It was discovered that OpenJDK incorrectly enforced the limit of datagram
sockets that can be created by a code running within a Java sandbox. An
attacker could possibly use this issue to bypass the sandbox restrictions
causing a denial of service. This issue only affected OpenJDK 8.
(CVE-2020-2659)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.10
openjdk-11-jdk - 11.0.6+10-1ubuntu1~19.10.1
openjdk-11-jre - 11.0.6+10-1ubuntu1~19.10.1
openjdk-11-jre-headless - 11.0.6+10-1ubuntu1~19.10.1
openjdk-11-jre-zero - 11.0.6+10-1ubuntu1~19.10.1
openjdk-8-jdk - 8u242-b08-0ubuntu3~19.10
openjdk-8-jre - 8u242-b08-0ubuntu3~19.10
openjdk-8-jre-headless - 8u242-b08-0ubuntu3~19.10
openjdk-8-jre-zero - 8u242-b08-0ubuntu3~19.10
Ubuntu 18.04 LTS
openjdk-11-jdk - 11.0.6+10-1ubuntu1~18.04.1
openjdk-11-jre - 11.0.6+10-1ubuntu1~18.04.1
openjdk-11-jre-headless - 11.0.6+10-1ubuntu1~18.04.1
openjdk-11-jre-zero - 11.0.6+10-1ubuntu1~18.04.1
openjdk-8-jdk - 8u242-b08-0ubuntu3~18.04
openjdk-8-jre - 8u242-b08-0ubuntu3~18.04
openjdk-8-jre-headless - 8u242-b08-0ubuntu3~18.04
openjdk-8-jre-zero - 8u242-b08-0ubuntu3~18.04
Ubuntu 16.04 LTS
openjdk-8-jdk - 8u242-b08-0ubuntu3~16.04
openjdk-8-jre - 8u242-b08-0ubuntu3~16.04
openjdk-8-jre-headless - 8u242-b08-0ubuntu3~16.04
openjdk-8-jre-jamvm - 8u242-b08-0ubuntu3~16.04
openjdk-8-jre-zero - 8u242-b08-0ubuntu3~16.04
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
This update uses a new upstream release, which includes additional bug fixes.
After a standard system update you need to restart any Java applications or
applets to make all the necessary changes.
References
o CVE-2020-2583
o CVE-2020-2590
o CVE-2020-2593
o CVE-2020-2601
o CVE-2020-2604
o CVE-2020-2654
o CVE-2020-2655
o CVE-2020-2659
- --------------------------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
iQIVAwUBXjEFRmaOgq3Tt24GAQjAlg//VWz1WZEI8hx/ADQtBLtZ4ADGDUJ1eNIz
HoCMj8e25E5Hf1hGRlIxDeAd08jjBwxEH5SiGvu2Nnvyh7b+/dUtF66uH0GJL3bf
UvwEYNm8uvkVaq3raog/7UOrl1RbWUJGt2VDwgUwtGrT3/dHHBY3YtvlcVhm6mQ+
VfQT6WOrmLCL7nhqxPL1ttDtTGc5/1VO+2fWpox1J09pghMoOg50xHIoQGQkmUeH
WT9rAMgfpi91IkdvQY2wBsCMKLQUGi6lY5hXYpm18SdXiIS5obFzANVIufrlTUA2
8EGOA0lHDCoRU5cgPxSR1ZLIzsQpNqKeEMD8n24mbIbr3xhZCc+iB9BtLVXd1kYQ
jSj0MlKYowWtaELZzYCLkuPoX1dtBLEUQ6poZl/4W0Rdc1qeZtvjaEC2j39wbv4K
1BRkEwnEMuGZF63fZwVs86l94PQfl3rcaV9StztqvsG0ttGNZ07NEEiMsBNBHozK
BwTK7LcYLAnGbatfEPCoHnNLyjeIC9f/TnaobQPYcypzFA0NCBnOglTX4H3jPK8m
j2TBAoNTylSLxjrXW6oZtuCJk458djB8ueoRovsjyiHadQQkLauGGAKarnyYLhJT
D/5maiWDNZwfqvPF9jY526GXIcE00r6O7LsSJFScBBENMTr2n2t18bWNRhaG59+i
M3eVRG+OKFI=
=z2u1
-----END PGP SIGNATURE-----