CVE-2020-27540

Public Exploit

Description

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.20%
Third-Party Advisory medium.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://dil4rd.medium.com/groundhog-day-in-iot-valley-or-5-cves-in-1-camera-7dc1d2864707 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-27540?
CVE-2020-27540 has been scored as a critical severity vulnerability.
How to fix CVE-2020-27540?
To fix CVE-2020-27540, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27540 being actively exploited in the wild?
It is possible that CVE-2020-27540 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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