full-disclosure - [FD] CVE-2016-3672 - Unlimiting the stack not longer disables ASLR

Open Source and information security mailing list archives

Message-ID: <57050808.7000401@upv.es>
Date: Wed, 6 Apr 2016 14:58:48 +0200
From: Hector Marco-Gisbert <hecmargi@....es>
To: fulldisclosure@...lists.org, full-disclosure@...ts.grok.org.uk,
 bugs@...uritytracker.com, bugtraq@...urityfocus.com,
 oss-security@...ts.openwall.com
Subject: [FD] CVE-2016-3672 - Unlimiting the stack not longer disables ASLR

Hi everyone,

We have fixed an old and very known weakness in the Linux ASLR implementation.

The weakness allowed any user able to running 32-bit applications in a x86
machine disable the ASLR by setting the RLIMIT_STACK resource to unlimited.

This is a very old trick to disable ASLR, but unfortunately it was still present
in current Linux systems.

Details at:
http://hmarco.org/bugs/CVE-2016-3672-Unlimiting-the-stack-not-longer-disables-ASLR.html

Best,
Hector.

-- 
Dr. Hector Marco-Gisbert @ http://hmarco.org/
Cyber Security Researcher @ http://cybersecurity.upv.es
Universitat Politècnica de València (Spain)

_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: http://seclists.org/fulldisclosure/

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives