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Three Botnets Abuse Zero-Day Vulnerabilities in LILIN's DVRs!


Not of late, LILIN recorders were found to be vulnerable. Reportedly, botnet operators were behind the zero-day vulnerabilities that were exploited in the Digital Video Recorders (DVRs ) that the vendor is well known for.

Sources mention that the exploitation of the zero-day vulnerabilities had been a continuous thing for almost half a year and the vendor was unaware. Nevertheless, they rolled out a patch in February 2020.

Digital Video Recorders are electronic devices that collect video feeds from local CCTV/IP cameras systems and store them on different mass storage devices like SD cards, USB flash drives, disk drives, etc.

DVRs are a huge deal today given they are a major element for the security cameras that are used almost everywhere in these times.

With CCTV cameras raging, attacks especially designed for them have also risen equally. Malware botnets and other hacker operations have been targeting these widely used DVRs for quite some time now.

Per sources, the non-revised and out of date firmware stands to be the reason for these devices being hacked. Especially, the DVRs with default credentials are exploited to kick off DDoS and other IoT attacks.
Sources mention that security researchers found LILIN’s DVRs too were being exploited for almost half a year, since August last year by three botnets.


The vulnerability in the “NTPUpdate”, sources mention, allows attackers to inject and control the system’s commands. Via one of the ‘hardcoded credentials’ (root/icatch99 & report/8Jg0SR8K50) the attacker stands a chance to retrieve and alter a DVR’s config file, and later control commands on the device after the File Transfer Protocol (FTP) server configuration is regularly matched.

Per sources, the first botnet behind the zero-day vulnerability was the “Chalubo botnet” with a motive of exploiting the NTPUdate of the LILIN DVRs. The other two were employed by the “FBot botnet”

Reportedly, a couple of weeks after the previous attacks of the FBot, the Moobot botnet also tried its luck and succeeded on the second zero-day vulnerability.

There is no knowing as to what the exact motive was behind hacking the LILIN DVRs. Nevertheless, there has been a history of DDoS attacks, re-routing traffic, and proxy networks.

As it happens there are, per sources, over 5,000 LILIN DVRs that exist today thus making it quite a hefty task to update all of them immediately. But it’s a relief to know that the first step has been taken. There’s not much to worry about now given LILIN has released a firmware update along with solutions for mitigation.



source https://www.ehackingnews.com/2020/03/three-botnets-abuse-zero-day.html
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