Overview
- Description
- A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 (aka Matrix SDK for Android) before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the attacker to decrypt end-to-end encrypted messages sent by affected clients.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 5.9
- Impact score
- 3.6
- Exploitability score
- 2.2
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4.3
- Impact score
- 2.9
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
- nvd@nist.gov
- CWE-290
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:matrix:element:*:*:*:*:*:android:*:*",
"vulnerable": true,
"matchCriteriaId": "D575EEBA-AD7C-404F-965B-16DE5BFAE908",
"versionEndExcluding": "1.2.2"
},
{
"criteria": "cpe:2.3:a:matrix:matrix-android-sdk2:*:*:*:*:*:android:*:*",
"vulnerable": true,
"matchCriteriaId": "A35A1290-9B73-49EB-AB28-41D9AA9587F1",
"versionEndExcluding": "1.2.2"
}
],
"operator": "OR"
}
]
}
]