Mandriva Linux Security Advisory - A number of security vulnerabilities have been discovered and corrected in the latest Mozilla Thunderbird program, version 2.0.0.16.

A vulnerability allows remote attackers to execute code on vulnerable installations of RealPlayer. User interaction is required in that a user must visit a malicious web site. The specific flaw exists in the rmoc3260 ActiveX control. Specifying malicious values for the 'Controls' or 'Console' properties with a specific timing results in a memory corruption which can lead to code execution under the context of the current user.

A vulnerability allows remote attackers to execute arbitrary code on systems with vulnerable installations of the RealNetworks RealPlayer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists in RealPlayer's rjbdll.dll module when handling the deletion of media library files. An attacker could exploit this vulnerability using an ActiveX control {FDC7A535-4070-4B92-A0EA-D9994BCC0DC5} to import a vulnerable file into the user's media library. Upon deletion of this file, an exploitable stack based buffer overflow can be triggered.

A vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. User interaction is required to exploit this vulnerability in that the target must visit a malicious page. The specific flaw exists in the garbage collection of JavaScript document elements in WebCore. When a CSSStyleSheet object of a style element is copied, and the style element is deallocated, a reference to the ownerNode property of the copied CSSStyleSheet object will result in a heap corruption allowing for the execution of arbitrary code.

RealPlayer suffers from a vulnerability where the WindowName and Controls properties of rmoc3260.dll do not manage heap memory properly resulting in a use after free condition which can overwrite heap management structures resulting in code execution. RealPlayer 11, 10.5, 10, and Enterprise are all affected.

Security Objectives Advisory - The Cygwin installation and update process can be subverted to a lack of checksum verification. Cygwin setup.exe version 2.573.2.2 is affected.

Secunia Research has discovered a vulnerability in RealPlayer, which can potentially be exploited by malicious people to compromise a user's system. The vulnerability is caused due to a design error within the handling of frames in Shockwave Flash (SWF) files and can be exploited to cause a heap-based buffer overflow. Successful exploitation may allow execution of arbitrary code. Affected is RealNetworks RealPlayer version 10.5 Build 6.0.12.1483.

The Flashblock extension suffers from a bypass vulnerability.

Debian Security Advisory 1617-1 - In DSA-1603-1, Debian released an update to the BIND 9 domain name server, which introduced UDP source port randomization to mitigate the threat of DNS cache poisoning attacks (identified by the Common Vulnerabilities and Exposures project as CVE-2008-1447). The fix, while correct, was incompatible with the version of SELinux Reference Policy shipped with Debian Etch, which did not permit a process running in the named_t domain to bind sockets to UDP ports other than the standard 'domain' port (53). The incompatibility affects both the 'targeted' and 'strict' policy packages supplied by this version of refpolicy. This update to the refpolicy packages grants the ability to bind to arbitrary UDP ports to named_t processes. When installed, the updated packages will attempt to update the bind policy module on systems where it had been previously loaded and where the previous version of refpolicy was 0.0.20061018-5 or below.

Ubuntu Security Notice 629-1 - Various flaws in the mozilla-thunderbird package have been addressed including improper handling, weaknesses, denial of service, and code execution issues.