CVE-2020-36178

Public Exploit

Description

oal_ipt_addBridgeIsolationRules on TP-Link TL-WR840N 6_EU_0.9.1_4.16 devices allows OS command injection because a raw string entered from the web interface (an IP address field) is used directly for a call to the system library function (for iptables). NOTE: oal_ipt_addBridgeIsolationRules is not the only function that calls util_execSystem.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 12.27% Top 10%
Vendor Advisory tp-link.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.tp-link.com/fr/support/download/tl-wr840n/v6/#Firmware vendor advisory
https://therealunicornsecurity.github.io/TPLink/ third party advisory exploit
https://github.com/therealunicornsecurity/therealunicornsecurity.github.io/blob/master/_posts/2020-10-11-TPLink.md third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-36178?
CVE-2020-36178 has been scored as a critical severity vulnerability.
How to fix CVE-2020-36178?
To fix CVE-2020-36178, 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-2020-36178 being actively exploited in the wild?
It is possible that CVE-2020-36178 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~12% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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