CVE-2018-3891 — MEDIUM (4.6)

Vulnerability Description

An exploitable firmware downgrade vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted file can cause a logic flaw, resulting in a firmware downgrade. An attacker can insert an SD card to trigger this vulnerability.

CVSS Score

4.6

MEDIUM

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

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Yitechnology	Yi Home Camera Firmware	1.8.7.0d
Yitechnology	Yi Home Camera	-

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0566ExploitThird Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0566ExploitThird Party Advisory

FAQ

What is CVE-2018-3891?

CVE-2018-3891 is a vulnerability with a CVSS score of 4.6 (MEDIUM). An exploitable firmware downgrade vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted file can cause a logic flaw, resulting in a firmware do...

How severe is CVE-2018-3891?

CVE-2018-3891 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-3891?

Check the references section above for vendor advisories and patch information. Affected products include: Yitechnology Yi Home Camera Firmware, Yitechnology Yi Home Camera.