CVE-2021-42550
Deserialization of Untrusted Data in logback
6.6
MEDIUM
CVSS 3.1
EPSS 2.7%
Description
In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.
How to fix CVE-2021-42550
To remediate CVE-2021-42550, upgrade the affected package to a fixed version below.
- Debian/logback—no fix listed
- —upgrade to 1.2.9 or later
Is CVE-2021-42550 being exploited?
Low — EPSS is 2.7%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0
- from 0, < 1.2.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |