Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-36326

Severity CVSS v4.0:
Pending analysis
Type:
CWE-502 Deserialization of Untrusted Dat
Publication date:
28/04/2021
Last modified:
07/11/2023

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:* 6.1.8 (including) 6.4.0 (including)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 3.7 (including) 3.7.36 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 3.8 (including) 3.8.36 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 3.9 (including) 3.9.34 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.0 (including) 4.0.33 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.1 (including) 4.1.33 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.2 (including) 4.2.30 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.3 (including) 4.3.26 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.4 (including) 4.4.25 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.5 (including) 4.5.24 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.6 (including) 4.6.21 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.7 (including) 4.7.21 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.8 (including) 4.8.17 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 4.9 (including) 4.9.18 (excluding)
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 5.0 (including) 5.0.13 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools