Exim Remote Code Exploit

Published: 2017-11-25. Last Updated: 2017-11-25 18:30:58 UTC
by Guy Bruneau (Version: 1)
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A use-after-free(UAF) vulnerability has been found in Exim version 4.88 and 4.89 which could lead to the execution of arbitrary code or DoS. The patch has been made available today and is available for download here.

[1] https://bugs.exim.org/show_bug.cgi?id=2199
[2] https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4
[3] http://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-16943

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Guy Bruneau IPSS Inc.
Twitter: GuyBruneau
gbruneau at isc dot sans dot edu

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Benefits associated with the use of Open Source Software

Published: 2017-11-25. Last Updated: 2017-11-25 11:55:16 UTC
by Guy Bruneau (Version: 1)
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This week I ran across an interesting story talking about the benefits of using open source software in an enterprise.

This article has "Eleven CISOs from across industries weighed in, with most saying that open source software generally has been well vetted for security vulnerabilities by the vast development communities that contribute software to the libraries."[1]

I do agree with these CISOs' comment employing Commercial of the Shell (COTS) and Open Source Software (OSS) in our organization to accomplish our day to day work. Whenever I can, I "transform or adapt" OSS to perform custom tasks not just to save money but to make sure it does exactly what I want it to do. Like any software, even if it is OSS, it has a cost attached to it such as maintenance, software update, (like COTS) testing update before they are put into production and user training.

There are several places where you and I can find OSS projects that are used every day by the community; such as Github which contains hundreds of projects, software, code and references.

Do you maintain an Open Source Project? Want to share, where is it located?

[1] https://www.prnewswire.com/news-releases/11-chief-information-security-officers-cisos-say-open-source-software-provides-security-potential-for-cost-savings-300559323.html
[2] https://opensource.com/resources/what-open-source
[3] http://handlers.sans.org/gbruneau/sinkhole.htm
[4] https://github.com/
[5] https://github.com/wtsxDev/reverse-engineering

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Guy Bruneau IPSS Inc.
Twitter: GuyBruneau
gbruneau at isc dot sans dot edu

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