Multiple Java OpenJDK security vulnerabilities has been identified and fixed :

The design of the W3C XML Signature Syntax and Processing (XMLDsig) recommendation specifies an HMAC truncation length (HMACOutputLength) but does not require a minimum for its length, which allows attackers to spoof HMAC-based signatures and bypass authentication by specifying a truncation length with a small number of bits (CVE-2009-0217).

The Java Web Start framework does not properly check all application jar files trust and this allows context-dependent attackers to execute arbitrary code via a crafted application, related to NetX (CVE-2009-1896).

Some variables and data structures without the final keyword definition allows context-depend attackers to obtain sensitive information. The target variables and data structures are stated as follow: (1) LayoutQueue, (2) Cursor.predefined, (3) AccessibleResourceBundle.getContents, (4) ImageReaderSpi.STANDARD_INPUT_TYPE, (5) ImageWriterSpi.STANDARD_OUTPUT_TYPE, (6) the imageio plugins, (7) DnsContext.debug, (8) RmfFileReader/StandardMidiFileWriter.types, (9) AbstractSaslImpl.logger, (10) Synth.Region.uiToRegionMap/lowerCaseNameMap, (11) the Introspector class and a cache of BeanInfo, and (12) JAX-WS (CVE-2009-2475).

The Java Management Extensions (JMX) implementation does not properly enforce OpenType checks, which allows context-dependent attackers to bypass intended access restrictions by leveraging finalizer resurrection to obtain a reference to a privileged object (CVE-2009-2476).

A flaw in the Xerces2 as used in OpenJDK allows remote attackers to cause denial of service via a malformed XML input (CVE-2009-2625).

The audio system does not prevent access to java.lang.System properties either by untrusted applets and Java Web Start applications, which allows context-dependent attackers to obtain sensitive information by reading these properties (CVE-2009-2670).

A flaw in the SOCKS proxy implementation allows remote attackers to discover the user name of the account that invoked either an untrusted applet or Java Web Start application via unspecified vectors (CVE-2009-2671).

A flaw in the proxy mechanism implementation allows remote attackers to bypass intended access restrictions and connect to arbitrary sites via unspecified vectors, related to a declaration that lacks the final keyword (CVE-2009-2673).

An integer overflow in the JPEG images parsing allows context-dependent attackers to gain privileges via an untrusted Java Web Start application that grants permissions to itself (CVE-2009-2674).

An integer overflow in the unpack200 utility decompression allows context-dependent attackers to gain privileges via vectors involving either an untrusted applet or Java Web Start application that grants permissions to itself (CVE-2009-2675).

A flaw in the JDK13Services.getProviders grants full privileges to instances of unspecified object types, which allows context-dependent attackers to bypass intended access restrictions either via an untrusted applet or application (CVE-2009-2689).

A flaw in the OpenJDK's encoder, grants read access to private variables with unspecified names, which allows context-dependent attackers to obtain sensitive information either via an untrusted applet or application (CVE-2009-2690).

The XML signature checker did not impose limits on the minimum length of HMAC signatures in XML documentes. Attackers could therefore specify a length of e.g. 1 to make the signature appear valid and therefore effectively bypass verification of XML documents.
(CVE-2009-0217) The WebStart component does not allow to run unsigned code in some cases. (CVE-2009-1896) A NULL pointer dereference was fixed in the LittleCMS component. (CVE-2009-0793)

Urgent security updates have been included

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Urgent security fixes have been included.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
40694	Mandriva Linux Security Advisory : java-1.6.0-openjdk (MDVSA-2009:209)	Nessus	Mandriva Local Security Checks	8/24/2009	1/6/2021	critical
40816	openSUSE Security Update : java-1_6_0-openjdk (java-1_6_0-openjdk-1252)	Nessus	SuSE Local Security Checks	8/31/2009	1/14/2021	critical
40818	openSUSE Security Update : java-1_6_0-openjdk (java-1_6_0-openjdk-1252)	Nessus	SuSE Local Security Checks	8/31/2009	1/14/2021	critical
40507	Fedora 11 : java-1.6.0-openjdk-1.6.0.0-27.b16.fc11 (2009-8329)	Nessus	Fedora Local Security Checks	8/7/2009	1/11/2021	critical
40515	Fedora 10 : java-1.6.0-openjdk-1.6.0.0-20.b16.fc10 (2009-8337)	Nessus	Fedora Local Security Checks	8/10/2009	1/11/2021	critical
40547	Ubuntu 8.10 / 9.04 : openjdk-6 vulnerabilities (USN-814-1)	Nessus	Ubuntu Local Security Checks	8/11/2009	1/19/2021	critical

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