USN-814-1: OpenJDK vulnerabilities

Ubuntu Security Notice USN-814-1

11th August, 2009

openjdk-6 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 9.04
  • Ubuntu 8.10

Software description

  • openjdk-6

Details

It was discovered that the XML HMAC signature system did not
correctly check certain lengths. If an attacker sent a truncated
HMAC, it could bypass authentication, leading to potential privilege
escalation. (CVE-2009-0217)

It was discovered that JAR bundles would appear signed if only one element
was signed. If a user were tricked into running a malicious Java applet, a
remote attacker could exploit this to gain access to private information and
potentially run untrusted code. (CVE-2009-1896)

It was discovered that certain variables could leak information. If a
user were tricked into running a malicious Java applet, a remote attacker
could exploit this to gain access to private information and potentially
run untrusted code. (CVE-2009-2475, CVE-2009-2690)

A flaw was discovered the OpenType checking. If a user were tricked
into running a malicious Java applet, a remote attacker could bypass
access restrictions. (CVE-2009-2476)

It was discovered that the XML processor did not correctly check
recursion. If a user or automated system were tricked into processing
a specially crafted XML, the system could crash, leading to a denial of
service. (CVE-2009-2625)

It was discovered that the Java audio subsystem did not correctly validate
certain parameters. If a user were tricked into running an untrusted
applet, a remote attacker could read system properties. (CVE-2009-2670)

Multiple flaws were discovered in the proxy subsystem. If a user
were tricked into running an untrusted applet, a remote attacker could
discover local user names, obtain access to sensitive information, or
bypass socket restrictions, leading to a loss of privacy. (CVE-2009-2671,
CVE-2009-2672, CVE-2009-2673)

Flaws were discovered in the handling of JPEG images, Unpack200 archives,
and JDK13Services. If a user were tricked into running an untrusted
applet, a remote attacker could load a specially crafted file that would
bypass local file access protections and run arbitrary code with user
privileges. (CVE-2009-2674, CVE-2009-2675, CVE-2009-2676, CVE-2009-2689)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 9.04:
openjdk-6-jre-lib 6b14-1.4.1-0ubuntu11
icedtea6-plugin 6b14-1.4.1-0ubuntu11
openjdk-6-jre 6b14-1.4.1-0ubuntu11
Ubuntu 8.10:
openjdk-6-jre-lib 6b12-0ubuntu6.5
icedtea6-plugin 6b12-0ubuntu6.5
openjdk-6-jre 6b12-0ubuntu6.5

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system upgrade you need to restart any Java applications
to effect the necessary changes.

References

CVE-2009-0217, CVE-2009-1896, CVE-2009-2475, CVE-2009-2476, CVE-2009-2625, CVE-2009-2670, CVE-2009-2671, CVE-2009-2672, CVE-2009-2673, CVE-2009-2674, CVE-2009-2675, CVE-2009-2676, CVE-2009-2689, CVE-2009-2690