CVE-2017-5645
Deserialization of Untrusted Data in Log4j
9.8
CRITICAL
CVSS 3.1
EPSS 93.9%
Description
In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code.
How to fix CVE-2017-5645
To remediate CVE-2017-5645, upgrade the affected package to a fixed version below.
- Debian/apache-log4j2—upgrade to 2.7-2 or later
- —upgrade to 2.8.2 or later
- —upgrade to 2.8.2 or later
Is CVE-2017-5645 being exploited?
Likely — EPSS is 93.9%, placing CVE-2017-5645 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (3)
- from 0, < 2.7-2
- >= 2.0, < 2.8.2
- >= 2.0, < 2.8.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |