CVE-2018-6144 — Off-by-one error in PDFium in Google Chrome prior to 67

Off-by-one error in PDFium in Google Chrome prior to 67.0.3396.62 allowed a remote attacker to perform an out of bounds memory write via a crafted PDF file.

01What is this vulnerability?

Off-by-one error in PDFium in Google Chrome prior to 67.0.3396.62 allowed a remote attacker to perform an out of bounds memory write via a crafted PDF file.

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: 2019-01-09T19:00:00.000Z
• Last modified: 2024-08-05T05:54:53.157Z

09References

• crbug.com — https://crbug.com/828049
• www.securityfocus.com — http://www.securityfocus.com/bid/104309
• chromereleases.googleblog.com — https://chromereleases.googleblog.com/2018/05/stable-channel-update-for-desktop_…
• www.securitytracker.com — http://www.securitytracker.com/id/1041014
• access.redhat.com — https://access.redhat.com/errata/RHSA-2018:1815
• www.debian.org — https://www.debian.org/security/2018/dsa-4237