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Debian: Security update for OpenJDK

Several vulnerabilities have been discovered in OpenJDK, an implementation of the Java platform. The TLS implementation does not guard properly against certain chosen-plaintext attacks when block ciphers are used in CBC mode. The CORBA implementation contains a deserialization vulnerability in the IIOP implementation, allowing untrusted Java code (such as applets) to elevate its privileges. The Java scripting engine lacks necessary security manager checks, allowing untrusted Java code (such as applets) to elevate its privileges.

The skip() method in java.io.InputStream uses a shared buffer, allowing untrusted Java code (such as applets) to access data that is skipped by other code. The java.awt.AWTKeyStroke class contains a flaw which allows untrusted Java code (such as applets) to elevate its privileges. The Java2D C code contains an integer overflow which results in a heap-based buffer overflow, potentially allowing untrusted Java code (such as applets) to elevate its privileges.

Malicous Java code can use up an excessive amount of UDP ports, leading to a denial of service. JAX-WS enables stack traces for certain server responses by default, potentially leaking sensitive information. JAR files in pack200 format are not properly checked for errors, potentially leading to arbitrary code execution when unpacking crafted pack200 files.

The RMI Registry server lacks access restrictions on certain methods, allowing a remote client to execute arbitary code. The RMI Registry server fails to properly restrict privileges of untrusted Java code, allowing RMI clients to elevate their privileges on the RMI Registry server. The com.sun.net.ssl.HttpsURLConnection class does not perform proper security manager checks in the setSSLSocketFactory() method, allowing untrusted Java code to bypass security policy restrictions.

Updated packages are available from security.debian.org.

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2356-1                   security@debian.org
http://www.debian.org/security/                            Florian Weimer
December 01, 2011                      http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : openjdk-6
Vulnerability  : several
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2011-3389 CVE-2011-3521 CVE-2011-3544 CVE-2011-3547 CVE-2011-3548 CVE-2011-3551 CVE-2011-3552 CVE-2011-3553 CVE-2011-3554 CVE-2011-3556 CVE-2011-3557 CVE-2011-3560

Several vulnerabilities have been discovered in OpenJDK, an
implementation of the Java platform:

CVE-2011-3389
  The TLS implementation does not guard properly against certain
  chosen-plaintext attacks when block ciphers are used in CBC
  mode.

CVE-2011-3521
  The CORBA implementation contains a deserialization
  vulnerability in the IIOP implementation, allowing untrusted
  Java code (such as applets) to elevate its privileges.

CVE-2011-3544
  The Java scripting engine lacks necessary security manager
  checks, allowing untrusted Java code (such as applets) to
  elevate its privileges.

CVE-2011-3547
  The skip() method in java.io.InputStream uses a shared buffer,
  allowing untrusted Java code (such as applets) to access data
  that is skipped by other code.

CVE-2011-3548
  The java.awt.AWTKeyStroke class contains a flaw which allows
  untrusted Java code (such as applets) to elevate its
  privileges.

CVE-2011-3551
  The Java2D C code contains an integer overflow which results
  in a heap-based buffer overflow, potentially allowing
  untrusted Java code (such as applets) to elevate its
  privileges.

CVE-2011-3552
  Malicous Java code can use up an excessive amount of UDP
  ports, leading to a denial of service.

CVE-2011-3553
  JAX-WS enables stack traces for certain server responses by
  default, potentially leaking sensitive information.

CVE-2011-3554
  JAR files in pack200 format are not properly checked for
  errors, potentially leading to arbitrary code execution when
  unpacking crafted pack200 files.

CVE-2011-3556
  The RMI Registry server lacks access restrictions on certain
  methods, allowing a remote client to execute arbitary code.

CVE-2011-3557
  The RMI Registry server fails to properly restrict privileges
  of untrusted Java code, allowing RMI clients to elevate their
  privileges on the RMI Registry server.

CVE-2011-3560
  The com.sun.net.ssl.HttpsURLConnection class does not perform
  proper security manager checks in the setSSLSocketFactory()
  method, allowing untrusted Java code to bypass security policy
  restrictions.

For the stable distribution (squeeze), this problem has been fixed in
version 6b18-1.8.10-0+squeeze1.

For the testing distribution (wheezy) and the unstable distribution
(sid), this problem has been fixed in version 6b23~pre11-1.

We recommend that you upgrade your openjdk-6 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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