Bug 798138 (CVE-2021-3603)

Summary:	<dev-php/PHPMailer-6.5.0: complex remote code execution (CVE-2021-3603)
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	trivial	CC:	mjo, php-bugs
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://www.huntr.dev/bounties/1-PHPMailer/PHPMailer/
Whiteboard:	~2 [noglsa]
Package list:		Runtime testing required:	---

Description John Helmert III archtester

2021-06-24 03:58:27 UTC

CVE-2021-3603 (https://github.com/PHPMailer/PHPMailer/commit/45f3c18dc6a2de1cb1bf49b9b249a9ee36a5f7f3):

PHPMailer 6.4.1 and earlier contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If the $patternselect parameter to validateAddress() is set to 'php' (the default, defined by PHPMailer::$validator), and the global namespace contains a function called php, it will be called in preference to the built-in validator of the same name. Mitigated in PHPMailer 6.5.0 by denying the use of simple strings as validator function names.

Not really happy with this severity, but it doesn't matter since it's all
unstable anyway. Please cleanup.

Comment 1 Larry the Git Cow gentoo-dev

2021-07-01 19:26:30 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=3e7ae6985e5f2c3ac6ebcc30d94449337a09bf31

commit 3e7ae6985e5f2c3ac6ebcc30d94449337a09bf31
Author:     Michael Orlitzky <mjo@gentoo.org>
AuthorDate: 2021-07-01 19:25:09 +0000
Commit:     Michael Orlitzky <mjo@gentoo.org>
CommitDate: 2021-07-01 19:25:09 +0000

    dev-php/PHPMailer: remove vulnerable PHPMailer-6.4.1.ebuild.
    
    Bug: https://bugs.gentoo.org/798138
    Package-Manager: Portage-3.0.20, Repoman-3.0.2
    Signed-off-by: Michael Orlitzky <mjo@gentoo.org>

 dev-php/PHPMailer/Manifest               |  1 -
 dev-php/PHPMailer/PHPMailer-6.4.1.ebuild | 74 --------------------------------
 2 files changed, 75 deletions(-)

Comment 2 John Helmert III archtester

2021-07-01 20:41:11 UTC

Thanks! (Sorry for bad summary, terrible accident)