Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Mon, 17 Oct 2011 12:24:29 +0200
From: Timo Warns <>
Subject: Re: CVE request: double-free vulnerability in logsurfer

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;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.

Cheers, Timo

Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.