# CVE-2017-5120: chromium-browser: Inappropriate use of www mismatch redirects in browser navigation in Google Chrome prior to 61.0.3163.79 for Mac, Win...

CVE-2017-5120 is fixed in 5 products on 1 platform, first by chromium-browser 61.0.3163.100-0ubuntu1.1378, released April 2, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2017-5120
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0111
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 26, 2017

## 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).

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | chromium-browser Ubuntu 18.04.6 LTS (bionic) | 61.0.3163.100-0ubuntu1.1378 | [chromium-browser 61.0.3163.100-0ubuntu1.1378](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-browser-61.0.3163.100-0ubuntu1.1378.md) | Apr 2, 2018 |
| Linux | chromium-browser-l10n Ubuntu 18.04.6 LTS (bionic) | 61.0.3163.100-0ubuntu1.1378 | [chromium-browser-l10n 61.0.3163.100-0ubuntu1.1378](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-browser-l10n-61.0.3163.100-0ubuntu1.1378.md) | Apr 2, 2018 |
| Linux | chromium-chromedriver Ubuntu 18.04.6 LTS (bionic) | 61.0.3163.100-0ubuntu1.1378 | [chromium-chromedriver 61.0.3163.100-0ubuntu1.1378](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-chromedriver-61.0.3163.100-0ubuntu1.1378.md) | Apr 2, 2018 |
| Linux | chromium-codecs-ffmpeg Ubuntu 18.04.6 LTS (bionic) | 61.0.3163.100-0ubuntu1.1378 | [chromium-codecs-ffmpeg 61.0.3163.100-0ubuntu1.1378](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-codecs-ffmpeg-61.0.3163.100-0ubuntu1.1378.md) | Apr 2, 2018 |
| Linux | chromium-codecs-ffmpeg-extra Ubuntu 18.04.6 LTS (bionic) | 61.0.3163.100-0ubuntu1.1378 | [chromium-codecs-ffmpeg-extra 61.0.3163.100-0ubuntu1.1378](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-codecs-ffmpeg-extra-61.0.3163.100-0ubuntu1.1378.md) | Apr 2, 2018 |

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Data as of 2026-11-13T14:02:24Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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