Remote code execution in Apache Log4



Published: 2017-04-02
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-5645
CWE-ID CWE-502
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Apache Log4j
Universal components / Libraries / Libraries used by multiple products

Vendor Apache Foundation

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Deserialization of untrusted data

EUVDB-ID: #VU12127

Risk: High

CVSSv3.1: 3.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-5645

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists receiving serialized log events from another application when using the TCP socket server or UDP socket server. A remote attacker can submit a specially crafted binary payload, when deserialized, and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to version 2.8.2.

Vulnerable software versions

Apache Log4j: 2.0 - 2.8.1

External links

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


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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