Buffer overflow in Trusteddomain Opendmarc
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.037 (89.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000
Affected products
- Trusteddomain Opendmarc — versions 1.4.0
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceforge.net/projects/opendmarc/ (Product, Third Party Advisory)
- github.com/trusteddomainproject/OpenDMARC/issues/64 (Exploit, Third Party Advisory)
- security.gentoo.org/glsa/202011-02 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/04/msg00026.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-12460?
- CVE-2020-12460 is a critical-severity vulnerability in Trusteddomain Opendmarc, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-07-27.
- How severe is CVE-2020-12460?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-12460 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.