Description
Inappropriate use of www mismatch redirects in browser navigation in Google Chrome prior to 61.0.3163.79 for Mac, Windows, and Linux, and 61.0.3163.81 for Android, allowed a remote attacker to potentially downgrade HTTPS requests to HTTP via a crafted HTML page. In other words, Chrome could transmit cleartext even though the user had entered an https URL, because of a misdesigned workaround for cases where the domain name in a URL almost matches the domain name in an X.509 server certificate (but differs in the initial "www." substring).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Google Chrome prior to 61.0.3163.79 for Mac, Windows and Linux, and 61.0.3163.81 for Android | Google Chrome prior to 61.0.3163.79 for Mac, Windows and Linux, and 61.0.3163.81 for Android | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | chromium-browser | 61.0.3163.100-1~deb9u1 | DSA-3985-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | chromium-browser | 61.0.3163.100-0ubuntu1.1378 | — |
| Ubuntu 16.04 LTS | chromium-browser | 61.0.3163.100-0ubuntu0.16.04.1306 | — |
| Ubuntu 16.04 LTS | oxide-qt | No fix yet | — |
| Ubuntu 14.04 LTS | chromium-browser | 61.0.3163.100-0ubuntu0.14.04.1202 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | chromium-browser | 61.0.3163.79-2.el6_9 | RHSA-2017:2676 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 12 SP2 | chromium | 61.0.3163.79-29.1 | openSUSE-SU-2017:2491-1, openSUSE-SU-2017:2482-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | chromium | 93.0.4577.82-1.1 | openSUSE-SU-2024:12948-1, openSUSE-SU-2024:10681-1 |
Advisories 6
- RHSA-2017:2676 Red Hat Security Advisory: chromium-browser security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-3985-1 chromium-browser - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2017:2491-1 Security update for chromium SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:2482-1 Security update for chromium SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10681-1 chromedriver-93.0.4577.82-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12948-1 ungoogled-chromium-113.0.5672.92-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://crbug.com/718676
- GLSA-201709-15 vendor-advisory
- RHSA-2017:2676 vendor-advisory
- 1039291 vdb-entry
- 100610 vdb-entry
- DSA-3985 vendor-advisory
- https://chromereleases.googleblog.com/2017/09/stable-channel-update-for-desktop.html