Home/CVE/The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass extra parameters to the mail comman
CVE

CVE-2016-10045

The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass extra parameters to the mail comman

The isMail transport in PHPMailer before 5.2.20 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code by leveraging improper interaction between the escapeshellarg function and internal escaping performed in the mail function in PHP. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-10033.

CRITICAL · CVSS 9.8 EPSS 0.93108
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0

Affected Products & Versions

3
wordpress<= 4.7
joomla joomla\!>= 1.5.0 and <= 3.6.5

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist phpmailer/phpmailer CRITICAL fixed in 5.2.20

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Dec 2016 · 07:59 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Advisories

1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2016/Dec/81Mailing ListPatchThird Party Advisory
http://www.securitytracker.com/id/1037533Third Party AdvisoryVDB Entry
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