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Google, Red Hat Release Patch for Critical glibc Vulnerability (CVE-2015-7547)

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A critical vulnerability has been discovered in the Linux GNU C Library (glibc) that could potentially allow attackers to execute code on servers and gain remote control of Linux machines, applications and devices.

Researchers at Google and Red Hat uncovered the flaw independently and collaborated to deliver a patch, which has been made available.

Google researchers explained the flaw (CVE-2015-7547) as a stack-based buffer overflow vulnerability in glibc’s DNS client-side resolver, which is triggered when the getaddrinfo() library function is used.

“Software using this function may be exploited with attacker-controlled domain names, attacker-controlled DNS servers, or through a man-in-the-middle attack,” the researchers said.

Much like the GHOST vulnerability (CVE-2015-025) that came to light last year, the bug is said to affect a large number of Linux distributions, software and devices.

The vulnerability was originally introduced in May 2008, but was reported to the...(continued)

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