CVE-2024-3170 — Use after free in WebRTC in Google Chrome prior to 121

Use after free in WebRTC in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

01What is this vulnerability?

Use after free in WebRTC in Google Chrome prior to 121.0.6167.85 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

02Affected products

Vendor	Product	Versions
Google	Chrome	121.0.6167.85

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-07-16T22:14:02.277Z
• Last modified: 2024-08-01T20:05:07.630Z

09References

• chromereleases.googleblog.com — https://chromereleases.googleblog.com/2024/01/stable-channel-update-for-desktop_…
• issues.chromium.org — https://issues.chromium.org/issues/41488824