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Blog 2008

18 posts

Projects, Linux, networks, systems, finds and internet standards from 2008.

MD5 is broken: a rogue certificate authority

An international team of researchers demonstrates how MD5 collisions made a validly signed intermediate certificate for a rogue certificate authority possible. The attack produced a fraudulent CA certificate that browsers would accept. System-wide security follows the weakest algorithm that is still accepted.

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Wii Fail: a strong architecture fails on details

bushing and marcan take apart the security architecture of the Nintendo Wii and show how several implementation errors rendered an impressive chain of trust useless. Several layers of protection do not help if they share the same unchecked assumption. Mass-market hardware turns rare implementation errors into permanently available research objects.

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Kernel-Log: kernel development explained, new Synaptics driver, Linux 2.6.27-rc3 released

The Kernel-Log of August 2008 presented Jon Corbet’s guide “How to Participate in the Linux Community”, which explains the kernel development process to newcomers and companies. In addition, the Synaptics touchpad driver 0.15.0 appeared for the first time under the MIT licence in the X.org project. With Linux 2.6.27-rc3 the auerswald ISDN driver was dropped, and support for Intel’s upcoming Ibex Peak chipsets was added.

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Kernel-Log: ath9k driver for Atheros Wi-Fi chips in 2.6.27; reading material and videos for Linux experts

Only three weeks after its presentation in 2008, the kernel developers accepted the ath9k driver for Atheros draft-N Wi-Fi chips into the main branch for Linux 2.6.27. Initially it only supported client mode; mesh, AP and monitor modes were planned. The Kernel-Log also pointed to reading material such as the OLS 2008 talks and an ACM special issue on the CFS scheduler, readahead and virtio.

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IETF discusses transition scenarios for the new internet protocol IPv6

In Dublin in 2008 the IETF discussed how IPv4 devices could continue to communicate during the transition to IPv6, since all 4.3 billion IPv4 addresses were expected to be allocated in around three years. Comcast engineer Alain Durand presented “Dual-Stack Lite”: IPv4 is tunnelled through the provider’s IPv6 network and translated there using carrier-grade NAT. Experts such as Fred Baker and Gert Döring warned that such NAT could delay IPv6 and called for native deployment.

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Linux kernel 2.6.24 with new Wi-Fi drivers

In January 2008 Linux 2.6.24 brought additional Wi-Fi drivers for the new Wi-Fi subsystem and the power-saving tickless feature for further architectures besides x86. The Completely Fair Scheduler introduced with 2.6.23 was optimised and learned fair group scheduling. This allowed priorities to be assigned to users or process groups, for example to favour multimedia or compilers.

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Critical security holes in PostgreSQL closed

In January 2008 the PostgreSQL developers closed five critical holes in all maintained versions from 7.3 to 8.2. Via expression indexes and DBLink functions, attackers could gain administrator rights, and via regular expressions they could bring the server down with a denial of service. The holes were found in the project’s own analyses, and no exploits were known.

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Linux kernel 0.01 for QEMU

In 2008 Abdel Benamrouche adapted the very first Linux kernel 0.01 so that it could be compiled with GCC 4.x and booted in emulators such as QEMU and Bochs. Bash 3.2, Coreutils 6.9, Vim 7.1 and other tools were also to run on it. Benamrouche provided a floppy and hard disk image for QEMU for download.

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