thoralox

Log4Shell

Last verified 2h ago

Apache Log4j2 JNDI lookup remote code execution

Exploited in the wild?
YES · Active in KEV
Public exploit?
YES · 412 PoCs
Patch available?
YES · Upstream & distros
Severity
10.0 CRITICAL
Check if you're affected Jump to fix commands

Risk signals

Known exploited
CISA KEV2021-12-10
Added Dec 10, 2021
97.5%
EPSS probability
100th percentile
PoC repos
412
CVSS
10.0

Summary

Still the most-scanned bug on the internet. Embedded Log4j in vendor appliances keeps it alive.

Fix it

Per-distro commands are being verified
Our team is confirming fixed package versions for Log4j. Use your distribution's security tracker in the meantime.

Related incidents

Apache Traversal
9.8 Critical
CVE-2021-41773

Encoded dot segments escape DocumentRoot; with mod_cgi enabled, leads to RCE.

CISA KEVPatch available
CVE-2019-11043
9.8 Critical
CVE-2019-11043

Specific nginx fastcgi_split_path_info configs allow RCE in PHP-FPM.

CISA KEVPatch available