Vulnerability identifier: #VU6376

Vulnerability risk: Low

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7983

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Joomla!
Web applications / CMS

Vendor: Joomla!

Description

The disclosed vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to excessive data output when sending email messages via JMail API. A remote attacker can retrieve version of used PHPMailer from the email headers.

Mitigation
Update to version 3.7.0.

Vulnerable software versions

Joomla!: 3.6.0 - 3.6.5, 3.3.0 - 3.3.6, 3.5.0 - 3.5.9, 3.4.0 - 3.4.8, 3.2.0 - 3.2.7, 3.1.0 - 3.1.6, 3.0.0 - 3.0.4, 2.5.0 - 2.5.28, 1.7.0 - 1.7.5, 1.6.0 - 1.6.6, 1.5.0 - 1.5.26

---

External links
http://developer.joomla.org/security-centre.html

---

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.