CVE-2018-3891

EUVD-2018-15677
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.6 MEDIUM
PHYSICAL
LOW
NONE
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
talosCNA
5.7 MEDIUM
PHYSICAL
LOW
NONE
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 17%
Affected Products (NVD)
VendorProductVersion
yitechnologyyi_home_camera_firmware
1.8.7.0d:d
𝑥
= Vulnerable software versions
References
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0566
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0566