Critical severity9.8NVD Advisory· Published Jul 27, 2020· Updated Jun 17, 2026
CVE-2020-12460
CVE-2020-12460
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:trusteddomain:opendmarc:*:*:*:*:*:*:*:*range: <=1.3.2
- cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta0:*:*:*:*:*:*
- cpe:2.3:a:trusteddomain:opendmarc:1.4.0:beta1:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- OpenDMARC/OpenDMARCdescription
Patches
Vulnerability mechanics
References
7- github.com/trusteddomainproject/OpenDMARC/issues/64nvdExploitThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/04/msg00026.htmlnvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202011-02nvdThird Party Advisory
- sourceforge.net/projects/opendmarc/nvdProductThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JHDKMCZGE3W4XBP76NLI2Q7IOZHXLD4A/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/nvd
News mentions
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