Date: Tue, 18 Oct 2011 16:12:29 -0400 (EDT) From: Josh Bressers <bressers@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: CVE request: double-free vulnerability in logsurfer ----- Original Message ----- > Am 17.10.2011 12:07, schrieb Marcus Meissner: > > On Mon, Oct 17, 2011 at 12:02:29PM +0200, Timo Warns wrote: > >> Gregor Kopf of Recurity Labs GmbH found a double-free vulnerability in > >> Logsurfer affecting the function prepare_exec(). The vulnerability is > >> caused by an insufficient treatment of an error condition that is > >> returned by the function get_word() when it is unable to correctly > >> parse its input. > >> > >> The following versions of logsurfer are affected: > >> > >> Logsurfer 1.5b and previous versions > >> Logsurfer+ 1.7 and previous versions > >> > >> A patch is available at > >> http://logsurfer.git.sourceforge.net/git/gitweb.cgi?p=logsurfer/logsurfer;a=commit;h=07983748da9ea3d4954b80f02fed692fe21b1134 > > > > How can this be exploited? > > > > It seems to happen in the argument handling and I doubt an attacker can > > inject arguments? > > Logsurfer allows to use substrings of log-file entries as arguments for > calling external commands. An attacker is able to exploit this > vulnerability by injecting specially crafted strings into a log-file that > is processed by logsurfer. > This sounds CVE worthy. Please use CVE-2011-3626. Thanks. -- JB
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