Date: Tue, 9 Dec 2014 17:07:55 +0100 From: Vincent Lefevre <vincent@...c17.net> To: Vasyl Kaigorodov <vkaigoro@...hat.com>, 772008@...s.debian.org Cc: oss-security@...ts.openwall.com Subject: Re: Bug#772008: CVE request: mpfr: buffer overflow in mpfr_strtofr Hi, On 2014-12-08 13:45:12 +0100, Vasyl Kaigorodov wrote: > Hello, > > A buffer overflow was reported  in mpfr. > This is due to incorrect GMP documentation for mpn_set_str about the > size of a buffer (discussion is at ; first fix in the GMP > documentation is at ). This bug is present in the MPFR versions > from 2.1.0 (adding mpfr_strtofr) to this one, and can be detected by > running "make check" in a 32-bit ABI under GNU/Linux with alloca > disabled (this is currently possible by using the --with-gmp-build > configure option where alloca has been disabled in the GMP build). It > is fixed by the strtofr patch . > Corresponding changeset in the 3.1 branch: 9110 . > > : https://gmplib.org/list-archives/gmp-bugs/2013-December/003267.html > : https://gmplib.org/repo/gmp-5.1/raw-rev/d19172622a74 > : http://www.mpfr.org/mpfr-3.1.2/patch11 > : https://gforge.inria.fr/scm/viewvc.php?view=rev&root=mpfr&revision=9110 The corresponding changeset is 9243, with URL: https://gforge.inria.fr/scm/viewvc.php?view=rev&root=mpfr&revision=9243 Regards, -- Vincent Lefèvre <vincent@...c17.net> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
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