CVE-2021-41506 — CRITICAL (9.8)

Vulnerability Description

Xiaongmai AHB7008T-MH-V2, AHB7804R-ELS, AHB7804R-MH-V2, AHB7808R-MS-V2, AHB7808R-MS, AHB7808T-MS-V2, AHB7804R-LMS, HI3518_50H10L_S39 V4.02.R11.7601.Nat.Onvif.20170420, V4.02.R11.Nat.Onvif.20160422, V4.02.R11.7601.Nat.Onvif.20170424, V4.02.R11.Nat.Onvif.20170327, V4.02.R11.Nat.Onvif.20161205, V4.02.R11.Nat.20170301, V4.02.R12.Nat.OnvifS.20170727 is affected by a backdoor in the macGuarder and dvrHelper binaries of DVR/NVR/IP camera firmware due to static root account credentials in the system.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Xiongmaitech	Ahb7008T-Mh-V2 Firmware	4.02.r11.7601.nat.onvif.20170420
Xiongmaitech	Ahb7008T-Mh-V2	-
Xiongmaitech	Ahb7804R-Els Firmware	4.02.r11.nat.onvif.20160422
Xiongmaitech	Ahb7804R-Els	-
Xiongmaitech	Ahb7804R-Mh-V2 Firmware	4.02.r11.7601.nat.onvif.20170424
Xiongmaitech	Ahb7804R-Mh-V2	-
Xiongmaitech	Ahb7808R-Ms-V2 Firmware	4.02.r11.nat.onvif.20170327
Xiongmaitech	Ahb7808R-Ms-V2	-
Xiongmaitech	Ahb7808R-Ms Firmware	4.02.r11.nat.onvif.20160328
Xiongmaitech	Ahb7808R-Ms	-
Xiongmaitech	Ahb7808T-Ms-V2 Firmware	4.02.r11.nat.onvifc.20161205
Xiongmaitech	Ahb7808T-Ms-V2	-
Xiongmaitech	Ahb7804R-Lms Firmware	4.02.r11.nat.20170301
Xiongmaitech	Ahb7804R-Lms	-
Xiongmaitech	Hi3518E 50H10L S39 Firmware	4.02.r12.nat.onvifs.20170727
Xiongmaitech	Hi3518E 50H10L S39	-

Related Weaknesses (CWE)

CWE-287

References

https://github.com/Snawoot/hisilicon-dvr-telnetThird Party Advisory
https://github.com/tothi/hs-dvr-telnetThird Party Advisory
https://habr.com/en/post/486856/ExploitThird Party Advisory
https://www.xiongmaitech.com/en/index.php/news/info/12/68Vendor Advisory
https://github.com/Snawoot/hisilicon-dvr-telnetThird Party Advisory
https://github.com/tothi/hs-dvr-telnetThird Party Advisory
https://habr.com/en/post/486856/ExploitThird Party Advisory
https://www.xiongmaitech.com/en/index.php/news/info/12/68Vendor Advisory

FAQ

What is CVE-2021-41506?

CVE-2021-41506 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Xiaongmai AHB7008T-MH-V2, AHB7804R-ELS, AHB7804R-MH-V2, AHB7808R-MS-V2, AHB7808R-MS, AHB7808T-MS-V2, AHB7804R-LMS, HI3518_50H10L_S39 V4.02.R11.7601.Nat.Onvif.20170420, V4.02.R11.Nat.Onvif.20160422, V4...

How severe is CVE-2021-41506?

CVE-2021-41506 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-41506?

Check the references section above for vendor advisories and patch information. Affected products include: Xiongmaitech Ahb7008T-Mh-V2 Firmware, Xiongmaitech Ahb7008T-Mh-V2, Xiongmaitech Ahb7804R-Els Firmware, Xiongmaitech Ahb7804R-Els, Xiongmaitech Ahb7804R-Mh-V2 Firmware.