0-Day: Dahua backdoor Generation 2 and 3

Posted by bashis on Mar 05

[STX]

I’m speechless, and almost don’t know what I should write… I (hardly) can’t believe what I have just found.

I have just discovered (to what I strongly believe is backdoor) in Dahua DVR/NVR/IPC and possible all their clones.

Since I am convinced this is a backdoor, I have my own policy to NOT notify the vendor before the community.
(I simply don’t want to listen on their poor excuses, their tryings to keep me silent…

CVE-2016-10244

The parse_charstrings function in type1/t1load.c in FreeType 2 before 2.7 does not ensure that a font contains a glyph name, which allows remote attackers to cause a denial of service (heap-based buffer over-read) or possibly have unspecified other impact via a crafted file.

CVE-2017-5999

An issue was discovered in sysPass 2.x before 2.1, in which an algorithm was never sufficiently reviewed by cryptographers. The fact that inc/SP/Core/Crypt.class is using the MCRYPT_RIJNDAEL_256() function (the 256-bit block version of Rijndael, not AES) instead of MCRYPT_RIJNDAEL_128 (real AES) could help an attacker to create unknown havoc in the remote system.

CVE-2017-5633

Multiple cross-site request forgery (CSRF) vulnerabilities on the D-Link DI-524 Wireless Router with firmware 9.01 allow remote attackers to (1) change the admin password, (2) reboot the device, or (3) possibly have unspecified other impact via crafted requests to CGI programs.