CVE-2020-1931

spamassassin: command injection via crafted configuration file

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A command execution issue was found in Apache SpamAssassin prior to 3.4.3. Carefully crafted nefarious Configuration (.cf) files can be configured to run system commands similar to CVE-2018-11805. This issue is less stealthy and attempts to exploit the issue will throw warnings. Thanks to Damian Lukowski at credativ for reporting the issue ethically. With this bug unpatched, exploits can be injected in a number of scenarios though doing so remotely is difficult. In addition to upgrading to SA 3.4.4, we again recommend that users should only use update channels or 3rd party .cf files from trusted places.

Se detectó un problema de ejecución de comando en Apache SpamAssassin versiones anteriores a 3.4.3. Los archivos (.cf) de Configuración nefastos cuidadosamente diseñados pueden ser configurados para ejecutar comandos de sistema similar al CVE-2018-11805. Este problema es menos sigiloso y los intentos para explotarlo arrojarán advertencias. Gracias a Damian Lukowski en credativ por reportar el problema éticamente. Con este error sin parchear, pueden ser inyectadas explotaciones en varios escenarios, aunque hacerlo remotamente es difícil. Además de actualizar a SA versiones 3.4.4, recomendamos de nuevo que los usuarios solo deben usar canales de actualización o archivos .cf de terceros desde lugares confiables.

Two vulnerabilities were discovered in spamassassin, a Perl-based spam filter using text analysis. Malicious rule or configuration files, possibly downloaded from an updates server, could execute arbitrary commands under multiple scenarios.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-02 CVE Reserved
2020-01-30 CVE Published
2024-08-04 CVE Updated
2025-05-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (10)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/02/msg00015.html	Mailing List
https://seclists.org/bugtraq/2020/Feb/1	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00003.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B7SY2LUSH2X3IUXN4EQQ5A6QVUFYIV3D	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VOVVKFP2G2AF5GHAB4WMHOEX76A3H6CE	2023-11-07
https://usn.ubuntu.com/4265-1	2023-11-07
https://usn.ubuntu.com/4265-2	2023-11-07
https://www.debian.org/security/2020/dsa-4615	2023-11-07
https://access.redhat.com/security/cve/CVE-2020-1931	2020-11-04
https://bugzilla.redhat.com/show_bug.cgi?id=1802975	2020-11-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Spamassassin Search vendor "Apache" for product "Spamassassin"				< 3.4.3 Search vendor "Apache" for product "Spamassassin" and version " < 3.4.3"		-		Affected