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Message-ID: <20151203121922.GB4471@jwilk.net>
Date: Thu, 3 Dec 2015 13:19:22 +0100
From: Jakub Wilk <jwilk@...lk.net>
To: oss-security@...ts.openwall.com
Cc: carnil@...ian.org, cve-assign@...re.org
Subject: Re: Re: Heap Overflow in PCRE
>3. The pattern in question for CVE-2015-3210, i.e., the
>/^(?P=B)((?P=B)(?J:(?P<B>c)(?P<B>a(?P=B)))>WGXCREDITS)/ pattern,
>doesn't have any instances of something like \1 or \g that are commonly
>used for a back reference.
(?P=foo) is the Python syntax for backreference, which is supported by
PCRE: http://pcre.org/current/doc/html/pcre2syntax.html#SEC20
--
Jakub Wilk
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