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AUSCERT External Security Bulletin Redistribution
ESB-2019.4702
USN-4223-1: OpenJDK vulnerabilities
18 December 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: OpenJDK
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated
Delete Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-2999 CVE-2019-2992 CVE-2019-2989
CVE-2019-2988 CVE-2019-2987 CVE-2019-2983
CVE-2019-2981 CVE-2019-2978 CVE-2019-2977
CVE-2019-2975 CVE-2019-2973 CVE-2019-2964
CVE-2019-2962 CVE-2019-2949 CVE-2019-2945
CVE-2019-2894
Reference: ESB-2019.4619
ESB-2019.4593
ESB-2019.4564
Original Bulletin:
https://usn.ubuntu.com/4223-1/
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USN-4223-1: OpenJDK vulnerabilities
17 December 2019
openjdk-8, openjdk-lts vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
Several security issues were fixed in OpenJDK.
Software Description
o openjdk-lts - Open Source Java implementation
o openjdk-8 - Open Source Java implementation
Details
Jan Jancar, Petr Svenda, and Vladimir Sedlacek discovered that a side- channel
vulnerability existed in the ECDSA implementation in OpenJDK. An Attacker could
use this to expose sensitive information. (CVE-2019-2894)
It was discovered that the Socket implementation in OpenJDK did not properly
restrict the creation of subclasses with a custom Socket implementation. An
attacker could use this to specially create a Java class that could possibly
bypass Java sandbox restrictions. (CVE-2019-2945)
Rob Hamm discovered that the Kerberos implementation in OpenJDK did not
properly handle proxy credentials. An attacker could possibly use this to
impersonate another user. (CVE-2019-2949)
It was discovered that a NULL pointer dereference existed in the font handling
implementation in OpenJDK. An attacker could use this to cause a denial of
service (application crash). (CVE-2019-2962)
It was discovered that the Concurrency subsystem in OpenJDK did not properly
bound stack consumption when compiling regular expressions. An attacker could
use this to cause a denial of service (application crash). (CVE-2019-2964)
It was discovered that the JAXP subsystem in OpenJDK did not properly handle
XPath expressions in some situations. An attacker could use this to cause a
denial of service (application crash). (CVE-2019-2973, CVE-2019-2981)
It was discovered that the Nashorn JavaScript subcomponent in OpenJDK did not
properly handle regular expressions in some situations. An attacker could use
this to cause a denial of service (application crash). (CVE-2019-2975)
It was discovered that the String class in OpenJDK contained an out-of- bounds
access vulnerability. An attacker could use this to cause a denial of service
(application crash) or possibly expose sensitive information. This issue only
affected OpenJDK 11 in Ubuntu 18.04 LTS, Ubuntu 19.04, and Ubuntu 19.10.
(CVE-2019-2977)
It was discovered that the Jar URL handler in OpenJDK did not properly handled
nested Jar URLs in some situations. An attacker could use this to cause a
denial of service (application crash). (CVE-2019-2978)
It was discovered that the Serialization component of OpenJDK did not properly
handle deserialization of certain object attributes. An attacker could use this
to cause a denial of service (application crash). (CVE-2019-2983)
It was discovered that the FreetypeFontScaler class in OpenJDK did not properly
validate dimensions of glyph bitmap images read from font files. An attacker
could specially craft a font file that could cause a denial of service
(application crash). (CVE-2019-2987)
It was discovered that a buffer overflow existed in the SunGraphics2D class in
OpenJDK. An attacker could possibly use this to cause a denial of service
(excessive memory consumption or application crash). (CVE-2019-2988)
It was discovered that the Networking component in OpenJDK did not properly
handle certain responses from HTTP proxies. An attacker controlling a malicious
HTTP proxy could possibly use this to inject content into a proxied HTTP
connection. (CVE-2019-2989)
It was discovered that the font handling implementation in OpenJDK did not
properly validate TrueType font files in some situations. An attacker could
specially craft a font file that could cause a denial of service (excessive
memory consumption). (CVE-2019-2992)
It was discovered that the JavaDoc generator in OpenJDK did not properly filter
out some HTML elements properly, including documentation comments in Java
source code. An attacker could possibly use this to craft a Cross-Site
Scripting attack. (CVE-2019-2999)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.10
openjdk-11-jdk - 11.0.5+10-0ubuntu1.1
openjdk-11-jre - 11.0.5+10-0ubuntu1.1
openjdk-11-jre-headless - 11.0.5+10-0ubuntu1.1
openjdk-11-jre-zero - 11.0.5+10-0ubuntu1.1
Ubuntu 19.04
openjdk-11-jdk - 11.0.5+10-0ubuntu1.1~19.04
openjdk-11-jre - 11.0.5+10-0ubuntu1.1~19.04
openjdk-11-jre-headless - 11.0.5+10-0ubuntu1.1~19.04
openjdk-11-jre-zero - 11.0.5+10-0ubuntu1.1~19.04
Ubuntu 18.04 LTS
openjdk-11-jdk - 11.0.5+10-0ubuntu1.1~18.04
openjdk-11-jre - 11.0.5+10-0ubuntu1.1~18.04
openjdk-11-jre-headless - 11.0.5+10-0ubuntu1.1~18.04
openjdk-11-jre-zero - 11.0.5+10-0ubuntu1.1~18.04
Ubuntu 16.04 LTS
openjdk-8-jdk - 8u232-b09-0ubuntu1~16.04.1
openjdk-8-jre - 8u232-b09-0ubuntu1~16.04.1
openjdk-8-jre-headless - 8u232-b09-0ubuntu1~16.04.1
openjdk-8-jre-jamvm - 8u232-b09-0ubuntu1~16.04.1
openjdk-8-jre-zero - 8u232-b09-0ubuntu1~16.04.1
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-2019-2894
o CVE-2019-2945
o CVE-2019-2949
o CVE-2019-2962
o CVE-2019-2964
o CVE-2019-2973
o CVE-2019-2975
o CVE-2019-2977
o CVE-2019-2978
o CVE-2019-2981
o CVE-2019-2983
o CVE-2019-2987
o CVE-2019-2988
o CVE-2019-2989
o CVE-2019-2992
o CVE-2019-2999
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