Ubuntu update for opendmarc

Published: 2023-09-11

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-12272 CVE-2020-12460
CWE-ID	CWE-290 CWE-787
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system opendmarc (Ubuntu package) Operating systems & Components / Operating system package or component libopendmarc2 (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Authentication Bypass by Spoofing

EUVDB-ID: #VU34419

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12272

CWE-ID: CWE-290 - Authentication Bypass by Spoofing

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

OpenDMARC through 1.3.2 and 1.4.x allows attacks that inject authentication results to provide false information about the domain that originated an e-mail message. This is caused by incorrect parsing and interpretation of SPF/DKIM authentication results, as demonstrated by the example.net(.example.com substring.

Mitigation

Update the affected package opendmarc to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 20.04

opendmarc (Ubuntu package): before Ubuntu Pro

libopendmarc2 (Ubuntu package): before Ubuntu Pro

External links

http://ubuntu.com/security/notices/USN-6356-1

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) Out-of-bounds write

EUVDB-ID: #VU34050

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12460

CWE-ID: CWE-787 - Out-of-bounds write