Executive Summary

Title apache-log4j1.2 security update
Name DSA-4686 First vendor Publication 2020-05-16
Vendor Debian Last vendor Modification 2020-05-16
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


It was discovered that the SocketServer class included in apache-log4j1.2, a logging library for java, is vulnerable to deserialization of untrusted data. An attacker can take advantage of this flaw to execute arbitrary code in the context of the logger application by sending a specially crafted log event.

For the oldstable distribution (stretch), this problem has been fixed in version 1.2.17-7+deb9u1.

For the stable distribution (buster), this problem has been fixed in version 1.2.17-8+deb10u1.

We recommend that you upgrade your apache-log4j1.2 packages.

For the detailed security status of apache-log4j1.2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/apache-log4j1.2

Original Source

Url : http://www.debian.org/security/2020/dsa-4686

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-502 Deserialization of Untrusted Data

CPE : Common Platform Enumeration

Application 2
Application 2
Application 4
Application 1
Application 1
Application 3
Application 1
Application 1
Application 24
Application 11
Application 2
Application 1
Application 3
Application 5
Os 1
Os 3
Os 1

Snort® IPS/IDS

Date Description
2020-04-21 Apache Log4j SocketServer insecure deserialization remote code execution attempt
RuleID : 53475 - Revision : 1 - Type : SERVER-OTHER

Alert History

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Date Informations
2020-05-23 13:03:43
  • Multiple Updates
2020-05-16 05:18:13
  • First insertion