CVE-2020-12460

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.

• CWE-787

• https://github.com/trusteddomainproject/OpenDMARC/issues/64Exploit, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/04/msg00026.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JHDKMCZGE3W4XBP76NLI2Q7IOZHXLD4A/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/
• https://security.gentoo.org/glsa/202011-02Third Party Advisory
• https://sourceforge.net/projects/opendmarc/Product, Third Party Advisory
• https://github.com/trusteddomainproject/OpenDMARC/issues/64Exploit, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/04/msg00026.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JHDKMCZGE3W4XBP76NLI2Q7IOZHXLD4A/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/
• https://security.gentoo.org/glsa/202011-02Third Party Advisory
• https://sourceforge.net/projects/opendmarc/Product, Third Party Advisory

Published

Jul 27, 2020

Last Modified

Jun 17, 2026

Status

Modified

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