CVE-2019-17016
thunderbird - security update
6.1
MEDIUM
CVSS 3.1
EPSS 1.8%
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.
How to fix CVE-2019-17016
To remediate CVE-2019-17016, upgrade the affected package to a fixed version below.
- —upgrade to 68.4.0esr-1 or later
- —upgrade to 68.4.0esr-1~deb8u1 or later
- —upgrade to 68.4.1esr-1~deb9u1 or later
- —upgrade to 1:68.4.1-1 or later
- —upgrade to 1:68.4.1-1~deb8u1 or later
- —upgrade to 1:68.4.1-1~deb9u1 or later
Is CVE-2019-17016 being exploited?
Low — EPSS is 1.8%, meaning exploitation activity has not been observed at scale.
Affected packages (6)
- from 0, < 68.4.0esr-1
- from 0, < 68.4.0esr-1~deb8u1
- from 0, < 68.4.1esr-1~deb9u1
- from 0, < 1:68.4.1-1
- from 0, < 1:68.4.1-1~deb8u1
- from 0, < 1:68.4.1-1~deb9u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |