Headline
Ubuntu Security Notice USN-6356-1
Ubuntu Security Notice 6356-1 - Jianjun Chen, Vern Paxson and Jian Jiang discovered that OpenDMARC incorrectly handled certain inputs. If a user or an automated system were tricked into receiving crafted inputs, an attacker could possibly use this to falsify the domain of an e-mails origin. Patrik Lantz discovered that OpenDMARC incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service.
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Ubuntu Security Notice USN-6356-1
September 11, 2023
opendmarc vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in OpenDMARC.
Software Description:
- opendmarc: Open Source implementation of the DMARC specification
Details:
Jianjun Chen, Vern Paxson and Jian Jiang discovered that OpenDMARC
incorrectly handled certain inputs. If a user or an automated system were
tricked into receiving crafted inputs, an attacker could possibly use this
to falsify the domain of an e-mails origin. (CVE-2020-12272)
Patrik Lantz discovered that OpenDMARC incorrectly handled certain inputs.
If a user or an automated system were tricked into opening a specially
crafted input file, a remote attacker could possibly use this issue to
cause a denial of service. (CVE-2020-12460)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
libopendmarc2 1.3.2-7ubuntu0.1
opendmarc 1.3.2-7ubuntu0.1
Ubuntu 18.04 LTS:
libopendmarc2 1.3.2-3ubuntu0.2
opendmarc 1.3.2-3ubuntu0.2
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
libopendmarc2 1.3.1+dfsg-3ubuntu0.1~esm1
opendmarc 1.3.1+dfsg-3ubuntu0.1~esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6356-1
CVE-2020-12272, CVE-2020-12460
Package Information:
https://launchpad.net/ubuntu/+source/opendmarc/1.3.2-7ubuntu0.1
https://launchpad.net/ubuntu/+source/opendmarc/1.3.2-3ubuntu0.2
Related news
OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 has improper null termination in the function opendmarc_xml_parse that can result in a one-byte heap overflow in opendmarc_xml when parsing a specially crafted DMARC aggregate report. This can cause remote memory corruption when a '\0' byte overwrites the heap metadata of the next chunk and its PREV_INUSE flag.
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.