CVE-2020-12460
high-risk
Published 2020-07-27
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.
Do I need to act?
!
14.6% chance of exploitation in next 30 days
EPSS score — higher than 85% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (6)
Affected Vendors
References (14)
Third Party Advisory
https://security.gentoo.org/glsa/202011-02
Third Party Advisory
https://security.gentoo.org/glsa/202011-02
57
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
12/34 · Low
Exposure
13/34 · Low