An incorrect assumption about block structure in Blink in Google Chrome prior to 57.0.2987.133 for Mac, Windows, and Linux, and 57.0.2987.1…

published 2017-10-27 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-14161

cvss: 8.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

An incorrect assumption about block structure in Blink in Google Chrome prior to 57.0.2987.133 for Mac, Windows, and Linux, and 57.0.2987.132 for Android, allowed a remote attacker to potentially exploit memory corruption via a crafted HTML page that triggers improper casting.

Patch / fix

fixed in 1 distros 4

google chrome 57.0.2987.132, 57.0.2987.133

ubuntu red hat opensuse arch linux

chromium-browser Ubuntu 14.04 LTS 58.0.3029.81-0ubuntu0.14.04.1172
chromium-browser Ubuntu 16.04 LTS 58.0.3029.81-0ubuntu0.16.04.1277

ubuntu advisories UBUNTU-CVE-2017-5052

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

chromium-browser RHEL 6 EXTRAS 57.0.2987.133-1.el6_9

red hat advisories RHSA-2017:0860

chromium openSUSE Tumbleweed 93.0.4577.82-1.1
chromium openSUSE Tumbleweed 113.0.5672.92-1.1
chromium Package Hub 12 SP2 57.0.2987.133-11.1

opensuse advisories openSUSE-SU-2024:10681-1 openSUSE-SU-2024:12948-1 openSUSE-SU-2017:0908-1 openSUSE-SU-2017:0909-1

chromium Arch Linux 57.0.2987.133-1

arch linux advisories AVG-231

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-5052 updated 2026-06-28 cvss 8.8

chromium-browser: bad cast in blink

Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 57.0.2987.133-1.el6_9 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 57.0.2987.133-1.el6_9 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 57.0.2987.133-1.el6_9
fixed: vendor fix RHSA-2017:0860

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

n/a Google Chrome prior to 57.0.2987.133 for Mac, Windows and Linux, and 57.0.2987.132 for Android

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

Technology feeds

Google Chrome rss critical rss

References

access.redhat.com /errata/RHSA-2017:0860
vendor-advisory
security.gentoo.org /glsa/201704-02
vendor-advisory
securityfocus.com /bid/97220
vdb-entry
chromereleases.googleblog.com /2017/03/stable-channel-update-for-desktop_29.html
crbug.com /662767

Sources

CVE List CVE-2017-5052
NVD CVE-2017-5052

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary