CVE-2018-18359 — Incorrect handling of Reflect

Incorrect handling of Reflect.construct in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page.

01What is this vulnerability?

Incorrect handling of Reflect.construct in V8 in Google Chrome prior to 71.0.3578.80 allowed a remote attacker to perform an out of bounds memory read 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: 2018-12-11T15:00:00.000Z
• Last modified: 2024-08-05T11:08:21.411Z

09References

• chromereleases.googleblog.com — https://chromereleases.googleblog.com/2018/12/stable-channel-update-for-desktop.…
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:3803
• crbug.com — https://crbug.com/907714
• www.debian.org — https://www.debian.org/security/2018/dsa-4352
• www.securityfocus.com — http://www.securityfocus.com/bid/106084
• security.gentoo.org — https://security.gentoo.org/glsa/201908-18