CVE-2020-12460
CRITICAL9.8EPSS 14.6%opendmarc - security update
Published: 7/27/2020Modified: 4/28/2026
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.
Affected packages (2)
- Debian/opendmarcfrom 0, < 1.4.0~beta1+dfsg-3
- Debian/opendmarcfrom 0, < 1.3.2-2+deb9u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |