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CVE-2012-3423

Status Candidate

Overview

The IcedTea-Web plugin before 1.2.1 does not properly handle NPVariant NPStrings without NUL terminators, which allows remote attackers to cause a denial of service (crash), obtain sensitive information from memory, or execute arbitrary code via a crafted Java applet.

Related Files

Mandriva Linux Security Advisory 2012-122
Posted Aug 3, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-122 - Multiple vulnerabilities has been discovered and corrected in icedtea-web. An uninitialized pointer use flaw was found in IcedTea-Web web browser plugin. A malicious web page could use this flaw make IcedTea-Web browser plugin pass invalid pointer to a web browser. Depending on the browser used, it may cause the browser to crash or possibly execute arbitrary code. It was discovered that the IcedTea-Web web browser plugin incorrectly assumed that all strings provided by browser are NUL terminated, which is not guaranteed by the NPAPI (Netscape Plugin Application Programming Interface. When used in a browser that does not NUL terminate NPVariant NPStrings, this could lead to buffer over-read or over-write, resulting in possible information leak, crash, or code execution. The updated packages have been upgraded to the 1.1.6 version which is not affected by these issues.

tags | advisory, web, arbitrary, vulnerability, code execution
systems | linux, mandriva
advisories | CVE-2012-3422, CVE-2012-3423
MD5 | 3cc27f97068a6b9857d9f6b7e626b6c0
Ubuntu Security Notice USN-1521-1
Posted Jul 31, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1521-1 - Chamal De Silva discovered that the IcedTea-Web Java web browser plugin could dereference an uninitialized pointer. A remote attacker could use this to craft a malicious web page that could cause a denial of service by crashing the web browser or possibly execute arbitrary code. Steven Bergom and others discovered that the IcedTea-Web Java web browser plugin assumed that all strings provided by browsers are NULL terminated, which is not guaranteed by the NPAPI (Netscape Plugin Application Programming Interface). A remote attacker could use this to craft a malicious Java applet that could cause a denial of service by crashing the web browser, expose sensitive information or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, java, remote, web, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2012-3422, CVE-2012-3423, CVE-2012-3422, CVE-2012-3423
MD5 | 14c3623fa76ed21327ac5ea71b7ed2d5
Red Hat Security Advisory 2012-1132-01
Posted Jul 31, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1132-01 - The IcedTea-Web project provides a Java web browser plug-in and an implementation of Java Web Start, which is based on the Netx project. It also contains a configuration tool for managing deployment settings for the plug-in and Web Start implementations. An uninitialized pointer use flaw was found in the IcedTea-Web plug-in. Visiting a malicious web page could possibly cause a web browser using the IcedTea-Web plug-in to crash, disclose a portion of its memory, or execute arbitrary code. It was discovered that the IcedTea-Web plug-in incorrectly assumed all strings received from the browser were NUL terminated. When using the plug-in with a web browser that does not NUL terminate strings, visiting a web page containing a Java applet could possibly cause the browser to crash, disclose a portion of its memory, or execute arbitrary code.

tags | advisory, java, web, arbitrary
systems | linux, redhat
advisories | CVE-2012-3422, CVE-2012-3423
MD5 | 50bef58daea95da735fd6ff2b279dfb6
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