by Kastro
Paper/Archive/CVE-2023-28386

CVE-2023-28386

Snap One OvrC Cloud — Snap One OvrC Pro devices versions 7.2 and prior do not validate firmware updates correctly.

EPSS 0.4%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 36.3.363 × 207.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Snap One OvrC Pro devices versions 7.2 and prior do not validate firmware updates correctly. The device only calculates the MD5 hash of the firmware and does not check using a private-public key mechanism. The lack of complete PKI system firmware signature could allow attackers to upload arbitrary firmware updates, resulting in code execution.

Affected

ProductAffectedFixed inSource
OvrC Cloud< 7.37.3CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
icscert (CNA)8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refcisa.gov/news-events/ics-advisories/icsa-23-136-01refcontrol4.com/docs/product/ovrc-software/release-notes/english/latest/ovrc-software-release-notes-rev-p.pdf