Vulnerability in Company Cs-C2shw
CVE-2020-27540
Bash injection vulnerability and bypass of signature verification in Rostelecom CS-C2SHW 5.0.082.1. The camera reads firmware update configuration from SD card file vc\version.json. fw-sign parameter and from this configuration is directly inserted into a bash command. Firmware update is run automatically if there is special file on the inserted SD card.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Company Cs-C2shw
- Company Cs-C2shw Firmware — versions 5.0.082.1
Weakness classification (CWE)
References
- dil4rd.medium.com/groundhog-day-in-iot-valley-or-5-cves-in-1-camera-7dc1d2864707 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27540?
- CVE-2020-27540 is a critical-severity vulnerability in Company Cs-C2shw, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.8/10. Published 2021-01-26.
- How severe is CVE-2020-27540?
- Critical severity. CVSS v3 base score is 9.8 out of 10.