CVE-2022-39236mediumCWE-20

CVE-2022-39236: medium-severity vulnerability in matrix-org matrix-js-sdk

Matrix Javascript SDK improper beacon events can cause availability issues

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 4.3epss 1.4%
In short

The Matrix Javascript SDK can be disrupted by malformed beacon events, causing it to malfunction or hide data from users. This affects applications using the SDK between versions 17.1.0-rc.1 and 19.6.x, potentially preventing proper operation or displaying corrupted information.

Technical detail

Improperly formed beacon events can cause the matrix-js-sdk to enter a degraded state where it appears operational but excludes or corrupts runtime data during sync processing. The vulnerability affects versions 17.1.0-rc.1 through 19.6.x; exploitation requires the presence of malformed beacon events in the matrix server data. Impact includes SDK malfunction, data corruption, and disrupted client-server synchronization.

Summary generated and translated by AI from the official description.
Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Starting with version 17.1.0-rc.1, improperly formed beacon events can disrupt or impede the matrix-js-sdk from functioning properly, potentially impacting the consumer's ability to process data safely. Note that the matrix-js-sdk can appear to be operating normally but be excluding or corrupting runtime data presented to the consumer. This is patched in matrix-js-sdk v19.7.0. Redacting applicable events, waiting for the sync processor to store data, and restarting the client are possible workarounds. Alternatively, redacting the applicable events and clearing all storage will fix the further perceived issues. Downgrading to an unaffected version, noting that such a version may be subject to other vulnerabilities, will additionally resolve the issue.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Affected products
matrix-org · matrix-js-sdk
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