CVE-2019-11759
8.8
HIGH
CVSS 3.1
EPSS 2.1%
Description
An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
How to fix CVE-2019-11759
To remediate CVE-2019-11759, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 68.2.0esr-1 or later
- —upgrade to 1:68.2.1-1 or later
Is CVE-2019-11759 being exploited?
Low — EPSS is 2.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 68.2.0esr-1
- from 0, < 1:68.2.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |