critical
9.8
CWE
787
Advisory Published
CVE Published
Updated

CVE-2020-12460

First published: Mon Jul 27 2020(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
ubuntu/opendmarc<1.3.2-7ubuntu0.1
1.3.2-7ubuntu0.1
ubuntu/opendmarc<1.3.2-3ubuntu0.2
1.3.2-3ubuntu0.2
ubuntu/opendmarc<1.4.0~
1.4.0~
ubuntu/opendmarc<1.3.1+dfsg-3ubuntu0.1~
1.3.1+dfsg-3ubuntu0.1~
<=1.3.2
=1.4.0-beta0
=1.4.0-beta1
=33
=34
=9.0
Trusteddomain Opendmarc<=1.3.2
Trusteddomain Opendmarc=1.4.0-beta0
Trusteddomain Opendmarc=1.4.0-beta1
Fedoraproject Fedora=33
Fedoraproject Fedora=34
Debian Debian Linux=9.0
debian/opendmarc
1.3.2-6+deb10u2
1.3.2-6+deb10u4
1.4.0~beta1+dfsg-6+deb11u1
1.4.2-2
1.4.2-4

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2020-12460?

    The severity of CVE-2020-12460 is high.

  • How does CVE-2020-12460 occur?

    CVE-2020-12460 occurs due to improper null termination in the function opendmarc_xml_parse.

  • What is the impact of CVE-2020-12460?

    The impact of CVE-2020-12460 is a one-byte heap overflow in opendmarc_xml when parsing a specially crafted DMARC aggregate report, which can cause remote memory corruption.

  • Which versions of OpenDMARC are affected by CVE-2020-12460?

    OpenDMARC versions 1.3.2 through 1.3.2-6+deb10u4, 1.4.x through 1.4.0-Beta1, 1.4.0~beta1+dfsg-6+deb11u1, 1.4.2-2, and 1.4.2-3 are affected by CVE-2020-12460.

  • How can I fix CVE-2020-12460?

    To fix CVE-2020-12460, update OpenDMARC to a version that includes the necessary remedy, such as version 1.3.2-6+deb10u4 or later.

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