High severity · published Jun 10, 2021
CVE-2021-34555
OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header field
7.5
CVSS
2.7%
EPSS
No
On KEV
Description
OpenDMARC 1.4.1 and 1.4.1.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header field.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
33; 34 · source: NVD
OP
Opendmarc · Trusteddomain
1.4.1; 1.4.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34555
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34555
Exploit
https://github.com/trusteddomainproject/OpenDMARC/issues/179
Patch
https://github.com/trusteddomainproject/OpenDMARC/pull/178
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MAT4ZSWPQ5SUTMYCXRXI5SMTWL4AG7E/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZHZD4WZDYRBB2XVW2EQ4DQ2KYMAGPUO/
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