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2018-11-16 Phar object injection

High
Synchro published GHSA-7w4p-72j7-v7c2 Mar 5, 2020

Package

composer PHPMailer (Composer)

Affected versions

< 6.0.6

Patched versions

6.0.6

Description

PHPMailer versions prior to 6.0.6 and 5.2.27 are vulnerable to an object injection attack by passing phar:// paths into addAttachment() and other functions that may receive unfiltered local paths, possibly leading to RCE. See this article for more info on this type of vulnerability. Mitigated by blocking the use of paths containing URL-protocol style prefixes such as phar://. Reported by Sehun Oh of cyberone.kr.

Impact

Object injection, possible remote code execution

Patches

Fixed in 6.0.6 and 5.2.27

Workarounds

Validate and sanitise user input before using.

References

https://nvd.nist.gov/vuln/detail/CVE-2018-19296

For more information

If you have any questions or comments about this advisory:

Severity

High

CVE ID

CVE-2018-19296

Weaknesses

No CWEs