CVE-2022-41904
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.
Does this matter?
Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- EPSS
- 0.45% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-357
- Affected
- element/element
- Source
- security-advisories@github.com
References
- https://github.com/vector-im/element-ios/releases/tag/v1.9.7Release Notes, Third Party Advisory
- https://github.com/vector-im/element-ios/security/advisories/GHSA-fm8m-99j7-323gThird Party Advisory
- https://github.com/vector-im/element-ios/releases/tag/v1.9.7Release Notes, Third Party Advisory
- https://github.com/vector-im/element-ios/security/advisories/GHSA-fm8m-99j7-323gThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.