CVE-2022-41904

Element iOS is vulnerable due to missing decoration for events decrypted with untrusted Megolm sessions

Description

Element iOS is an iOS Matrix client provided by Element. It is based on MatrixSDK. Prior to version 1.9.7, events encrypted using Megolm for which trust could not be established did not get decorated accordingly (with warning shields). Therefore a malicious homeserver could inject messages into the room without the user being alerted that the messages were not sent by a verified group member, even if the user has previously verified all group members. This issue has been patched in Element iOS 1.9.7. There are currently no known workarounds.

Category

6.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.08%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: vector-im element-ios
Published at:
Updated at:

References

Link Tags
https://github.com/vector-im/element-ios/security/advisories/GHSA-fm8m-99j7-323g third party advisory
https://github.com/vector-im/element-ios/releases/tag/v1.9.7 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2022-41904?
CVE-2022-41904 has been scored as a medium severity vulnerability.
How to fix CVE-2022-41904?
To fix CVE-2022-41904, 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-2022-41904 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-41904 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-41904?
CVE-2022-41904 affects vector-im element-ios.
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