CVE-2021-3603
PHPMailer PHP Function Injection Vulnerability
Description
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.
INFO
Published Date :
June 17, 2021, 12:15 p.m.
Last Modified :
Nov. 7, 2023, 3:38 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.2
Affected Products
The following products are affected by CVE-2021-3603
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3603.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3603 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3603 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference huntr.dev https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM/ [No types assigned] Added Reference huntr.dev https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ/ [No types assigned] Removed Reference huntr.dev https://lists.fedoraproject.org/archives/list/[email protected]/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ/ Removed Reference huntr.dev https://lists.fedoraproject.org/archives/list/[email protected]/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM/ -
Modified Analysis by [email protected]
Sep. 20, 2021
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 26, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM/ [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 24, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/PHPMailer/PHPMailer/commit/45f3c18dc6a2de1cb1bf49b9b249a9ee36a5f7f3 No Types Assigned https://github.com/PHPMailer/PHPMailer/commit/45f3c18dc6a2de1cb1bf49b9b249a9ee36a5f7f3 Patch, Third Party Advisory Changed Reference Type https://www.huntr.dev/bounties/1-PHPMailer/PHPMailer/ No Types Assigned https://www.huntr.dev/bounties/1-PHPMailer/PHPMailer/ Product Added CWE NIST CWE-829 Added CPE Configuration OR *cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:* versions up to (including) 6.4.1
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3603 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3603
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.34 }} 0.03%
score
0.70931
percentile