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1979 changes to exploits/shellcodes Couchdb 1.5.0 - 'uuids' Denial of Service Apache CouchDB 1.5.0 - 'uuids' Denial of Service Beyond Remote 2.2.5.3 - Denial of Service (PoC) udisks2 2.8.0 - Denial of Service (PoC) Termite 3.4 - Denial of Service (PoC) SoftX FTP Client 3.3 - Denial of Service (PoC) Silverstripe 2.3.5 - Cross-Site Request Forgery / Open redirection SilverStripe CMS 2.3.5 - Cross-Site Request Forgery / Open Redirection Silverstripe CMS 3.0.2 - Multiple Vulnerabilities SilverStripe CMS 3.0.2 - Multiple Vulnerabilities Silverstripe CMS 2.4 - File Renaming Security Bypass SilverStripe CMS 2.4 - File Renaming Security Bypass Silverstripe CMS 2.4.5 - Multiple Cross-Site Scripting Vulnerabilities SilverStripe CMS 2.4.5 - Multiple Cross-Site Scripting Vulnerabilities Silverstripe CMS 2.4.7 - 'install.php' PHP Code Injection SilverStripe CMS 2.4.7 - 'install.php' PHP Code Injection Silverstripe Pixlr Image Editor - 'upload.php' Arbitrary File Upload SilverStripe CMS Pixlr Image Editor - 'upload.php' Arbitrary File Upload Silverstripe CMS 2.4.x - 'BackURL' Open Redirection SilverStripe CMS 2.4.x - 'BackURL' Open Redirection Silverstripe CMS - 'MemberLoginForm.php' Information Disclosure SilverStripe CMS - 'MemberLoginForm.php' Information Disclosure Silverstripe CMS - Multiple HTML Injection Vulnerabilities SilverStripe CMS - Multiple HTML Injection Vulnerabilities Apache CouchDB 1.7.0 and 2.x before 2.1.1 - Remote Privilege Escalation Apache CouchDB 1.7.0 / 2.x < 2.1.1 - Remote Privilege Escalation Monstra CMS before 3.0.4 - Cross-Site Scripting Monstra CMS < 3.0.4 - Cross-Site Scripting (2) Monstra CMS < 3.0.4 - Cross-Site Scripting Monstra CMS < 3.0.4 - Cross-Site Scripting (1) Navigate CMS 2.8 - Cross-Site Scripting Collectric CMU 1.0 - 'lang' SQL injection Joomla! Component CW Article Attachments 1.0.6 - 'id' SQL Injection LG SuperSign EZ CMS 2.5 - Remote Code Execution MyBB Visual Editor 1.8.18 - Cross-Site Scripting Joomla! Component AMGallery 1.2.3 - 'filter_category_id' SQL Injection Joomla! Component Micro Deal Factory 2.4.0 - 'id' SQL Injection RICOH Aficio MP 301 Printer - Cross-Site Scripting Joomla! Component Auction Factory 4.5.5 - 'filter_order' SQL Injection RICOH MP C6003 Printer - Cross-Site Scripting Linux/ARM - Egghunter (PWN!) + execve(_/bin/sh__ NULL_ NULL) Shellcode (28 Bytes) Linux/ARM - sigaction() Based Egghunter (PWN!) + execve(_/bin/sh__ NULL_ NULL) Shellcode (52 Bytes)
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List, I've completed the second paper in my series analyzing Sophos
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Antivirus internals, titled "Practical Attacks against Sophos
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Antivirus". As the name suggests, this paper describes realistic
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attacks against networks using Sophos products.
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The paper includes a working pre-authentication remote root exploit
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that requires zero-interation, and could be wormed within the next few
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days. I would suggest administrators deploying Sophos products study
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my results urgently, and implement the recommendations.
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I've also included a section on best practices for Sophos users,
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intended to help administrators of high-value networks minimise the
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potential damage to their assets caused by Sophos.
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The paper is available to download at the link below.
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https://lock.cmpxchg8b.com/sophailv2.pdf
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http://www.exploit-db.com/docs/22510.pdf
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A working exploit for Sophos 8.0.6 on Mac is available, however the
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techniques used in the exploit easily transfer to Windows and Linux,
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due to multiple critical implementation flaws described in the paper.
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Testcases for the other flaws described in the paper are available on
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request.
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https://lock.cmpxchg8b.com/sophail-rev3-exploit.tar.gz
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/22509.tar.gz
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It is my understanding that Sophos plan to publish their own advice to
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their customers today. I have not been given an opportunity to review
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the advice in advance, so cannot comment on it's accuracy.
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I have had a working exploit since September, but Sophos requested I
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give them two months to prepare for this publication before discussing
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it. A timeline of our interactions is included in the paper. I believe
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CERT are also preparing an advisory. I'm currently working on the
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third paper in the series, which I'll announce at a later date. Please
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contact me if you would like to be a reviewer. I will add any last
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minute updates to twitter, at http://twitter.com/taviso.
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If you would like to learn more about Sophos internals, you can read
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my previous paper in the series here
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https://lock.cmpxchg8b.com/sophail.pdf
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I've reproduced a section of the conclusion below.
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Tavis.
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Conclusion
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As demonstrated in this paper, installing Sophos Antivirus exposes
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machines to considerable risk. If Sophos do not urgently improve their
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security posture, their continued deployment causes significant risk
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to global networks and infrastructure.
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In response to early access to this report, Sophos did allocate some
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resources to resolve the issues discussed, however they were cearly
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ill-equipped to handle the output of one co-operative, non-adversarial
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security researcher. A sophisticated state-sponsored or highly
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motivated attacker could devastate the entire Sophos user base with
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ease.
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Sophos claim their products are deployed throughout healthcare,
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government, finance and even the military. The chaos a motivated
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attacker could cause to these systems is a realistic global threat.
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For this reason, Sophos products should only ever be considered for
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low-value non-critical systems and never deployed on networks or
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environments where a complete compromise by adversaries would be
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inconvenient. |