Mail command execution vulnerability in PHPMailer by the vendor
CVE-2016-10033

9.8CRITICAL

Key Information:

Vendor
PHPmailer Project
Status
PHPmailer
Vendor
CVE Published:
30 December 2016

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 94%

Summary

A vulnerability exists in the mailSend function of the isMail transport in PHPMailer prior to version 5.2.18. This flaw enables remote attackers to inject additional parameters into the mail command, thus potentially executing arbitrary code. The exploitation occurs through a crafted Sender property containing a backslash double quote ('"'). As a result, the security of applications relying on this mail transport may be compromised, allowing for unauthorized operations and code execution.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

exploit-CVE-2016-10033
Created by opsxcq

CVE-2016-10033
Created by GeneralTesler

safeshell
Created by Zenexer

References

http://packetstormsecurity.com/files/140350/PHPMailer-Sen...
x_refsource_MISC
https://www.drupal.org/psa-2016-004
x_refsource_CONFIRM
https://www.exploit-db.com/exploits/42221/
exploitx_refsource_EXPLOIT-DB

EPSS Score

94% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.