Multiple vulnerabilities in Apache SpamAssassin

Published: 2020-02-02

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-1930 CVE-2020-1931
CWE-ID	CWE-78
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SpamAssassin Server applications / DLP, anti-spam, sniffers
Vendor	Apache Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU24819

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1930

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to insufficient sanitization of nefarious rule configuration (.cf) files. A remote attacker can supply a specially crafted .cf file and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SpamAssassin: 3.4.0 - 3.4.2

External links

http://bz.apache.org/SpamAssassin/show_bug.cgi?id=7648
http://lists.apache.org/thread.html/r6729f3d3be754a06c39bb4f11c925a3631e8ea2b4c865546d755cb0a@%3Cannounce.apache.org%3E
http://www.debian.org/security/2020/dsa-4615

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) OS Command Injection

EUVDB-ID: #VU24820