[Bug 1492093] CVE-2017-12883 perl: Buffer over-read in regular expression parser

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https://bugzilla.redhat.com/show_bug.cgi?id=1492093


--- Doc Text *updated* by Eric Christensen <sparks@xxxxxxxxxx> ---
A heap buffer overread was found in perl's grok_bslash_N() function, which is used in the compilation of Unicode nodes in regular expressions, possibly leading to crash or dump of memory segments via the error output. An attacker, able to provide a specially crafted regular expression, could look for sensible information in the error message, or crash perl.


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