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CVE-2022-41904

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

Published: Nov 11, 2022Updated: Nov 21, 2024 Sources: CVE List NVDCWE-357
NVD MITRE
6.4CVSSMEDIUM
EPSS Score
0.4%
Top 67.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-357NVD-CWE-Other

Affected Products

elementelement
On-prem
Communications / messaging-chat
element-iosvector-im
Mixed
Communications / messaging-chat
elementcommercialCommunicationsaka element, synapse, desktop
vector-imoss-projectCommunicationsaka vector-im, element-ios

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/vector-im/element-ios/releases/tag/v1.9.7
github.com
https://github.com/vector-im/element-ios/security/advisories/GHSA-fm8m-99j7-323g
github.com

Timeline

Published
Nov 11, 2022
Last Updated
Nov 21, 2024

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