CVE-2020-12460

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 24.33% Top 5%
Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://sourceforge.net/projects/opendmarc/ product third party advisory
https://github.com/trusteddomainproject/OpenDMARC/issues/64 exploit third party advisory
https://security.gentoo.org/glsa/202011-02 vendor advisory third party advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00026.html mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JHDKMCZGE3W4XBP76NLI2Q7IOZHXLD4A/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2D4JGHMALEJEWWG56DKR5OZB22TK7W5B/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBOGOQOK3TIWWJV66MW5YWNRJAFFYGR5/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-12460?
CVE-2020-12460 has been scored as a critical severity vulnerability.
How to fix CVE-2020-12460?
To fix CVE-2020-12460, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-12460 being actively exploited in the wild?
It is possible that CVE-2020-12460 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~24% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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