Bug 790203 (CVE-2020-36326)

Summary:	[TRACKER] PHPMailer: Object injection through Phar Deserialization via addAttachment with a UNC pathname (CVE-2020-36326)
Product:	Gentoo Security	Reporter:	GLSAMaker/CVETool Bot <glsamaker>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	normal	Keywords:	Tracker
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:	790206, 790209
Bug Blocks:

Description GLSAMaker/CVETool Bot gentoo-dev

2021-05-14 13:58:57 UTC

CVE-2020-36326 (https://nvd.nist.gov/vuln/detail/CVE-2020-36326):
  PHPMailer 6.1.8 through 6.4.0 allows object injection through Phar
  Deserialization via addAttachment with a UNC pathname. NOTE: this is similar
  to CVE-2018-19296, but arose because 6.1.8 fixed a functionality problem in
  which UNC pathnames were always considered unreadable by PHPMailer, even in
  safe contexts. As an unintended side effect, this fix eliminated the code
  that blocked addAttachment exploitation.