CVE-2017-11503

Ubuntu Security Notice USN-5956-2

Severity Score

6.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

PHPMailer 5.2.23 has XSS in the "From Email Address" and "To Email Address" fields of code_generator.php.

PHPMailer versión 5.2.23 tiene XSS en los campos "From Email Address" y "To Email Address" de code_generator.php.

Dawid Golunski discovered that PHPMailer was not properly escaping user input data used as arguments to functions executed by the system shell. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 ESM. It was discovered that PHPMailer was not properly escaping characters in certain fields of the code_generator.php example code. An attacker could possibly use this issue to conduct cross-site scripting attacks. This issue was only fixed in Ubuntu 16.04 ESM and Ubuntu 18.04 ESM.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-07-20 CVE Reserved
2017-07-20 CVE Published
2018-03-27 First Exploit
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (7)

URL	Tag	Source
http://www.securityfocus.com/bid/99293	Third Party Advisory
http://www.securitytracker.com/id/1039026	Third Party Advisory
https://github.com/PHPMailer/PHPMailer	Product

URL	Date	SRC
https://github.com/wizardafric/download	2018-03-27
https://cxsecurity.com/issue/WLB-2017060181	2024-08-05
https://packetstormsecurity.com/files/143138/phpmailer-xss.txt	2024-08-05

URL	Date	SRC
https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.24	2019-05-03

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Phpmailer Project Search vendor "Phpmailer Project"		Phpmailer Search vendor "Phpmailer Project" for product "Phpmailer"				5.2.23 Search vendor "Phpmailer Project" for product "Phpmailer" and version "5.2.23"		-		Affected