CVE-2021-41506
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 2.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 2.3% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.3% · EPSS, next 30 days
- Weakness
- CWE-287 · Improper authentication
- Record status
- Modified
Affected
- Xiongmaitech ahb7008t-mh-v2 Firmware 4.02.r11.7601.nat.onvif.20170420
- Xiongmaitech ahb7804r-els Firmware 4.02.r11.nat.onvif.20160422
- Xiongmaitech ahb7804r-mh-v2 Firmware 4.02.r11.7601.nat.onvif.20170424
- Xiongmaitech ahb7808r-ms-v2 Firmware 4.02.r11.nat.onvif.20170327
- Xiongmaitech ahb7808r-ms Firmware 4.02.r11.nat.onvif.20160328
- Xiongmaitech ahb7808t-ms-v2 Firmware 4.02.r11.nat.onvifc.20161205
- Xiongmaitech ahb7804r-lms Firmware 4.02.r11.nat.20170301
- Xiongmaitech hi3518e 50h10l s39 Firmware 4.02.r12.nat.onvifs.20170727
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-41506.md and follow it. Check whether this project is affected by CVE-2021-41506. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://www.xiongmaitech.com/en/index.php/news/info/12/68
- https://www.xiongmaitech.com/en/index.php/news/info/12/68
References
- https://github.com/Snawoot/hisilicon-dvr-telnet
- https://github.com/tothi/hs-dvr-telnet
- https://habr.com/en/post/486856/
- https://www.xiongmaitech.com/en/index.php/news/info/12/68
- https://github.com/Snawoot/hisilicon-dvr-telnet
- https://github.com/tothi/hs-dvr-telnet
- https://habr.com/en/post/486856/
- https://www.xiongmaitech.com/en/index.php/news/info/12/68