Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too permissive key forwarding strategy on the receiving end. Starting with version 19.7.0, the default policy for accepting key forwards has been made more strict in the matrix-js-sdk. matrix-js-sdk will now only accept forwarded keys in response to previously issued requests and only from own, verified devices. The SDK now sets a `trusted` flag on the decrypted message upon decryption, based on whether the key used to decrypt the message was received from a trusted source. Clients need to ensure that messages decrypted with a key with `trusted = false` are decorated appropriately, for example, by showing a warning for such messages. This attack requires coordination between a malicious homeserver and an attacker, and those who trust your homeservers do not need a workaround.
References
Link | Resource |
---|---|
https://github.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76 | Patch Third Party Advisory |
https://github.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0 | Release Notes Third Party Advisory |
https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-6263-x97c-c4gg | Third Party Advisory |
https://github.com/matrix-org/matrix-spec-proposals/pull/3061 | Patch Third Party Advisory |
https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients | Vendor Advisory |
https://security.gentoo.org/glsa/202210-35 | Third Party Advisory |
Configurations
History
08 Dec 2022, 03:13
Type | Values Removed | Values Added |
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References | (GENTOO) https://security.gentoo.org/glsa/202210-35 - Third Party Advisory |
31 Oct 2022, 22:15
Type | Values Removed | Values Added |
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References |
|
30 Sep 2022, 15:18
Type | Values Removed | Values Added |
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CPE | cpe:2.3:a:matrix:javascript_sdk:*:*:*:*:*:node.js:*:* | |
First Time |
Matrix javascript Sdk
Matrix |
|
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
CWE | ||
References | (CONFIRM) https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-6263-x97c-c4gg - Third Party Advisory | |
References | (MISC) https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients - Vendor Advisory | |
References | (MISC) https://github.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0 - Release Notes, Third Party Advisory | |
References | (MISC) https://github.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76 - Patch, Third Party Advisory | |
References | (MISC) https://github.com/matrix-org/matrix-spec-proposals/pull/3061 - Patch, Third Party Advisory |
28 Sep 2022, 20:20
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2022-09-28 20:15
Updated : 2023-12-10 14:35
NVD link : CVE-2022-39249
Mitre link : CVE-2022-39249
CVE.ORG link : CVE-2022-39249
JSON object : View
Products Affected
matrix
- javascript_sdk