Re: [FD] [oss-security] CVE-2016-4484: - Cryptsetup Initrd root Shell - Update: Dracut is also vulnerable

2016-11-15 Thread Hector Marco-Gisbert
Hello, We have found that systems that use Dracut instead of initramfs are also vulnerables (tested on Fedora 24 x86_64). Regards, Hector Marco & Ismael Ripoll. > Hello All, > > > Affected package Cryptsetup <= 2:1 > > > CVE-ID -- CVE-2016-4484 > > > Description

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

2016-04-06 Thread Hector Marco-Gisbert
, 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

[FD] Glibc Pointer guarding weakness

2015-09-07 Thread Hector Marco-Gisbert
. Details and PoC at: http://hmarco.org/bugs/glibc_ptr_mangle_weakness.html A patch is already sent to Glibc maintainers. This issue is similar to http://hmarco.org/bugs/CVE-2013-4788.html but now affect to dynamic linked applications. -- Hector Marco-Gisbert @ http://hmarco.org/ Cyber Security

Re: [FD] AMD Bulldozer Linux ASLR weakness: Reducing entropy by 87.5%

2015-05-08 Thread Hector Marco-Gisbert
are configured at once (without exiting from the menuconfig), then the system gets properly configured. It seems that something in the PaX Kconfig files are not properly done. Could anyone check it ? So, if you are using PaX, it worth to ensure that you are not losing any PaX feature. -- Hector Marco

[FD] Linux ASLR mmap weakness: Reducing entropy by half

2015-04-21 Thread Hector Marco-Gisbert
). Advisory details at: http://hmarco.org/bugs/linux-ASLR-reducing-mmap-by-half.html -- Hector Marco-Gisbert @ http://hmarco.org/ Cyber Security Researcher @ http://cybersecurity.upv.es Universitat Politècnica de València (Spain) ___ Sent through