CVE-2019-17016
Medium
Description
When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mozilla Firefox
PublishedJan 8, 2020
First seenJan 8, 2020
How to fix
Update
- mozilla firefox72.0 or later
- mozilla firefox_esr68.4 or later
Vendor advisories
- debian.org/security/2020/dsa-4600
- usn.ubuntu.com/4234-1/
- access.redhat.com/errata/RHSA-2020:0085
- access.redhat.com/errata/RHSA-2020:0086
- access.redhat.com/errata/RHSA-2020:0111
- access.redhat.com/errata/RHSA-2020:0120
- access.redhat.com/errata/RHSA-2020:0123
- access.redhat.com/errata/RHSA-2020:0127
- usn.ubuntu.com/4241-1/
- debian.org/security/2020/dsa-4603
- access.redhat.com/errata/RHSA-2020:0292
- access.redhat.com/errata/RHSA-2020:0295
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mozilla firefox | v < 72.0 | 72.0 |
| mozilla firefox_esr | v < 68.4 | 68.4 |
| debian debian_linux | 8.0, 9.0, 10.0 | — |
| canonical ubuntu_linux | 16.04, 18.04, 19.04, 19.10 | — |
| redhat enterprise_linux_desktop | 6.0, 7.0 | — |
| redhat enterprise_linux_server | 6.0, 7.0 | — |
| redhat enterprise_linux_server_aus | 7.7 | — |
| redhat enterprise_linux_server_tus | 7.7 | — |
| redhat enterprise_linux_workstation | 6.0, 7.0 | — |
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