Security News
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Security updates for Friday
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[Older] Microsoft Delays February Patch Tuesday Updates Until Next Month
It was created by Microsoft as a way to have a standard delivery date/schedule for updates that were being provided for the companies software. This allowed a lot of stability for users and IT Pros so they could be prepared for the monthly distribution oof the updates.
Well this month Microsoft has hit a snag with their monthly Patch Tuesday.
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Watershed SHA1 collision just broke the WebKit repository, others may follow
The bug resides in Apache SVN, an open source version control system that WebKit and other large software development organizations use to keep track of code submitted by individual members. Often abbreviated as SVN, Subversion uses SHA1 to track and merge duplicate files. Somehow, SVN systems can experience a severe glitch when they encounter the two PDF files published Thursday, proving that real-world collisions on SHA1 are now practical.
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Cloudflare Reverse Proxies are Dumping Uninitialized Memory
Thanks to Josh Triplett for sending us this Google Project Zero report about a dump of unitialized memory caused by Cloudflare's reverse proxies. "A while later, we figured out how to reproduce the problem. It looked like that if an html page hosted behind cloudflare had a specific combination of unbalanced tags, the proxy would intersperse pages of uninitialized memory into the output (kinda like heartbleed, but cloudflare specific and worse for reasons I'll explain later). My working theory was that this was related to their "ScrapeShield" feature which parses and obfuscates html - but because reverse proxies are shared between customers, it would affect *all* Cloudflare customers. We fetched a few live samples, and we observed encryption keys, cookies, passwords, chunks of POST data and even HTTPS requests for other major cloudflare-hosted sites from other users. Once we understood what we were seeing and the implications, we immediately stopped and contacted cloudflare security. "
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Secure your system with SELinux
SELinux is well known as the most sophisticated Linux Mandatory Access Control (MAC) System. If you install any Fedora or Redhat operating System it is enabled by default and running in enforcing mode. So far so good.
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