CVE-2022-39249
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-39249
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-39249.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-39249
- Aliases
- Related
- Published
- 2022-09-28T20:15:16Z
- Modified
- 2024-10-12T10:05:34.569629Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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
trustedflag 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 withtrusted = falseare 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
-
- https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-6263-x97c-c4gg
- https://matrix.org/blog/2022/09/28/upgrade-now-to-address-encryption-vulns-in-matrix-sdks-and-clients
- https://security.gentoo.org/glsa/202210-35
- https://github.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76
- https://github.com/matrix-org/matrix-spec-proposals/pull/3061
- https://github.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0
- https://security-tracker.debian.org/tracker/CVE-2022-39249
Affected packages
Debian:11 / node-matrix-js-sdk
Package
- Name
- node-matrix-js-sdk
- Purl
- pkg:deb/debian/node-matrix-js-sdk?arch=source
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affected
Git / github.com/matrix-org/matrix-js-sdk
Affected ranges
- Type
- GIT
- Repo
- https://github.com/matrix-org/matrix-js-sdk
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed