Secunia Security Advisory - Debian has issued an update for subversion. This fixes two vulnerabilities, which can be exploited by malicious people to cause a DoS (Denial of Service).
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Whitepaper called SSL and HTTP Exposed. It discusses how to perform an HTTPS stripping attack against the TOR network using sslstrip.py and iptables.
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Ubuntu Security Notice 1142-1 - Henne Vogelsang discovered that under certain PolicyKit configurations, GDM could be made to launch a browser. A local attacker could exploit this to gain access to files with the privileges of the gdm user. PolicyKit is not configured in this manner in Ubuntu by default.
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Red Hat Security Advisory 2011-0836-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. An integer underflow flaw, leading to a buffer overflow, was found in the Linux kernel's Datagram Congestion Control Protocol implementation. This could allow a remote attacker to cause a denial of service. Missing sanity checks were found in setup_arg_pages() in the Linux kernel. When making the size of the argument and environment area on the stack very large, it could trigger a BUG_ON(), resulting in a local denial of service. Various other issues were also addressed.
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