CVE-2020-11611

Public Exploit

Description

An issue was discovered in xdLocalStorage through 2.0.5. The buildMessage() function in xdLocalStorage.js specifies the wildcard (*) as the targetOrigin when calling the postMessage() function on the iframe object. Therefore any domain that is currently loaded within the iframe can receive the messages that the client sends.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Third-Party Advisory github.com Third-Party Advisory grimhacker.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/ofirdagan/cross-domain-local-storage third party advisory product
https://grimhacker.com/exploiting-xdlocalstorage-localstorage-and-postmessage/#Missing-TargetOrigin-Client exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-11611?
CVE-2020-11611 has been scored as a medium severity vulnerability.
How to fix CVE-2020-11611?
To fix CVE-2020-11611, 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-2020-11611 being actively exploited in the wild?
It is possible that CVE-2020-11611 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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