Apache Log4j socket receiver deserialization vulnerability

Published
Credit
Risk
2017.04.18
Telstra
Medium
CWE
CVE
Local
Remote
N/A
CVE-2017-5645
No
Yes

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial

CVE-2017-5645: Apache Log4j socket receiver deserialization vulnerability

Severity: High

CVSS Base Score: 7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)

Vendor: The Apache Software Foundation

Versions Affected: all versions from 2.0-alpha1 to 2.8.1

Description: 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.

Mitigation: Java 7+ users should migrate to version 2.8.2 or avoid using
the socket server classes. Java 6 users should avoid using the TCP or UDP
socket server classes, or they can manually backport the security fix from
2.8.2: <https://git-wip-us.apache.org/repos/asf?p=logging-log4j2.
git;h=5dcc192>

Credit: This issue was discovered by Marcio Almeida de Macedo of Red Team
at Telstra

References: <https://issues.apache.org/jira/browse/LOG4J2-1863>

References:

https://issues.apache.org/jira/browse/LOG4J2-1863


See this note in RAW Version

 
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