CVE-2019-5873 — Insufficient policy validation in navigation in Google Chrome on iOS prior to 77

Insufficient policy validation in navigation in Google Chrome on iOS prior to 77.0.3865.75 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

01What is this vulnerability?

Insufficient policy validation in navigation in Google Chrome on iOS prior to 77.0.3865.75 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.

02Affected products

Vendor	Product	Versions
Google	Chrome	unspecified

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

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

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: 2019-11-25T14:22:57.000Z
• Last modified: 2024-08-04T20:09:23.626Z

09References

• chromereleases.googleblog.com — https://chromereleases.googleblog.com/2019/09/stable-channel-update-for-desktop.…
• crbug.com — https://crbug.com/989497