What does an autorun.inf file do? If an autorun.inf file can tell gvfs to execute something directly, then it's probably not too critical that a malicious one can cause memory errors in gvfs. It could probably just have an evil payload as a command.
Thanks -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gvfs in Ubuntu. https://bugs.launchpad.net/bugs/1798725 Title: gvfs may crash when parsing non-valid UTF8 in autorun.inf Status in gvfs package in Ubuntu: Confirmed Bug description: Reported upstream at https://bugs.exim.org/show_bug.cgi?id=2330 - libpcre3 can be made to crash when matching the pattern \s*= when the context is n\xff= Able to reproduce on current Bionic using the PoC attached (which is copied directly from the upstream bug report) - in a fresh Bionic VM: $ sudo apt install build-essential libgtk2.0-dev $ cd PCRE_PoC $ ./compilePoC.sh $ ./PoC Content: ------------------- n�= ------------------- Pattern: ------------------- \s*= --------------------- Segmentation fault (core dumped) Haven't yet tested the second PoC via an external disk autorun.inf and gvfs-udisks2-volume-monitor. Also haven't tested in Cosmic / older releases To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gvfs/+bug/1798725/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
