Hackers Exploiting 5-year-old Unpatched Vulnerability in TBK DVR Gadgets

Might 03, 2023Ravie LakshmananSurveillance / Vulnerability

Risk actors are actively exploiting an unpatched five-year-old flaw impacting TBK digital video recording (DVR) gadgets, in accordance with an advisory issued by Fortinet FortiGuard Labs.

The vulnerability in query is CVE-2018-9995 (CVSS rating: 9.8), a essential authentication bypass difficulty that might be exploited by distant actors to achieve elevated permissions.

“The 5-year-old vulnerability (CVE-2018-9995) is because of an error when dealing with a maliciously crafted HTTP cookie,” Fortinet said in an outbreak alert on Might 1, 2023. “A distant attacker could possibly exploit this flaw to bypass authentication and procure administrative privileges finally main entry to digicam video feeds.”


The community safety firm stated it noticed over 50,000 makes an attempt to take advantage of TBK DVR gadgets utilizing the flaw within the month of April 2023. Regardless of the provision of a proof-of-concept (PoC) exploit, there are not any fixes that handle the vulnerability.

The flaw impacts TBK DVR4104 and DVR4216 product traces, that are additionally rebranded and bought utilizing the names CeNova, DVR Login, HVR Login, MDVR Login, Evening OWL, Novo, QSee, Pulnix, Securus, and XVR 5 in 1.

Moreover, Fortinet warned of a surge within the exploitation of CVE-2016-20016 (CVSS rating: 9.8), one other essential vulnerability affecting MVPower CCTV DVR fashions, together with TV-7104HE 1.8.4 115215B9 and TV7108HE.


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The flaw might allow a distant unauthenticated attacker to execute arbitrary working system instructions as root because of the presence of an internet shell that’s accessible over a /shell URI.

“With tens of hundreds of TBK DVRs accessible below totally different manufacturers, publicly-available PoC code, and an easy-to-exploit makes this vulnerability a simple goal for attackers,” Fortinet famous. “The current spike in IPS detections reveals that community digicam gadgets stay a well-liked goal for attackers.”

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