Is CVE-2024-42347 in the CISA KEV catalog?

No. CVE-2024-42347 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-42347?

CVE-2024-42347 has a CVSS v3 base score of 7.7 (HIGH).

What is the EPSS score for CVE-2024-42347?

CVE-2024-42347 has an EPSS score of 0.43% (34th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-42347?

Upgrade matrix-react-sdk to 3.105.1 or later.

CVE & CISA-KEV Catalog

CVE-2024-42347

HIGH

7.7

CVSS v3

NVD

Description

matrix-react-sdk is a react-based SDK for inserting a Matrix chat/voip client into a web page. A malicious homeserver could manipulate a user's account data to cause the client to enable URL previews in end-to-end encrypted rooms, in which case any URLs in encrypted messages would be sent to the server. This was patched in matrix-react-sdk 3.105.0. Deployments that trust their homeservers, as well as closed federations of trusted servers, are not affected. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CWE-359

How to fix

Remediation Available

matrix-react-sdkNVD

Affected:< 3.105.1Fixed in:3.105.1CVE-2024-42347derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploit Intelligence

0.43%probability of exploitation in 30 days

34thpercentile

Low risk: more likely to be exploited than 34% of all known CVEs.

References

Vendor Advisory1

github.com

Release Notes1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-08-12.