Improper Certificate Validation in Apache Log4j



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-9488
CWE-ID CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Apache Log4j
Universal components / Libraries / Libraries used by multiple products

Vendor Apache Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper Certificate Validation

EUVDB-ID: #VU27487

Risk: Low

CVSSv3.1: 3.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-9488

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform man-in-the-middle attack.

The vulnerability exists due to the Apache Log4j SMTP appender does not validate SSL certificates. A remote attacker can perform a MitM attack, intercept and decrypt network traffic.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Log4j: 2.13.1

CPE2.3 External links

http://issues.apache.org/jira/browse/LOG4J2-2819


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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