#VU7654 Improper input validation in Commons Email - CVE-2017-9801

Vulnerability identifier: #VU7654

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-9801

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Commons Email
Client/Desktop applications / Messaging software

Vendor: Apache Foundation

Description
The vulnerability allows a remote attacker to inject arbitrary files.

The weakness exists due to improper input validation flaw in the setSubject() method. A remote attacker can supply a specially crafted value containing line break characters, inject SMTP headers and perform further attack.

Mitigation
Update to version 1.5.

Vulnerable software versions

Commons Email: 1.0 - 1.4

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External links
https://commons.apache.org/proper/commons-email/security-reports.html

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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.