CVE-2021-3405
libebml - security update
6.5
MEDIUM
CVSS 3.1
EPSS 2.1%
Description
A flaw was found in libebml before 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml.
How to fix CVE-2021-3405
To remediate CVE-2021-3405, upgrade the affected package to a fixed version below.
- Debian/libebml—upgrade to 1.4.2-1 or later
- Debian/libebml—upgrade to 1.3.4-1+deb9u2 or later
Is CVE-2021-3405 being exploited?
Low — EPSS is 2.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.4.2-1
- from 0, < 1.3.4-1+deb9u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |