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Encryption Software Bug Security Linux

GnuTLS Flaw Leaves Many Linux Users Open To Attacks 127

A new flaw has been discovered in the GnuTLS cryptographic library that ships with several popular Linux distributions and hundreds of software implementations. According to the bug report, "A malicious server could use this flaw to send an excessively long session id value and trigger a buffer overflow in a connecting TLS/SSL client using GnuTLS, causing it to crash or, possibly, execute arbitrary code." A patch is currently available, but it will take time for all of the software maintainers to implement it. A lengthy technical analysis is available. "There don't appear to be any obvious signs that an attack is under way, making it possible to exploit the vulnerability in surreptitious "drive-by" attacks. There are no reports that the vulnerability is actively being exploited in the wild."
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GnuTLS Flaw Leaves Many Linux Users Open To Attacks

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  • by cant_get_a_good_nick ( 172131 ) on Tuesday June 03, 2014 @05:57PM (#47160199)

    I think there's a basic issue here, and that's of "what do I want to work on". This is a problem in any project - it's not limited to coding.

    I'm sure GNUTLS is coded how many things are coded. Lets start with a framework, and hang dummy code on it. Say "hey we got here!" when we got a packet. Then you flesh that out, and do what you really should do when you get that. Hey, it works! Beers all around. Then later, you start thinking "hmm, how can this get abused" and you add checks.

    But wait, before you think of how you can get broken, you're like "this code needs real functionality, let me work on this next". And the boundschecks never get coded.

    I'm sure you've been on a project where you thought "i really should cross all the T's, dot all the I's here" then your boss says "it works good enough" and you never get around to making it bulletproof. Or you do the fun drywall project at home, and you already sanded with 150 grit, you just not bother with the 300 grit.. it's good enough.

    OpenSource doesn't mean it's not written by people, with peoples' quirks and issues.

Loose bits sink chips.