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#36868of 53,630
7.5Total CVSS
Vulnerabilities · 1
PT-2021-4268
7.5
2021-06-10
Opendmarc · Opendmarc · CVE-2021-34555
**Name of the Vulnerable Software and Affected Versions** OpenDMARC versions 1.4.1 through 1.4.1.1 **Description** The issue is related to a denial of service caused by a NULL pointer dereference and application crash. This can be triggered by remote attackers via a multi-value From header field. The vulnerability is associated with errors in pointer dereferencing, allowing a remote attacker to cause a denial of service. **Recommendations** For OpenDMARC versions 1.4.1 through 1.4.1.1, consider disabling the handling of multi-value From header fields as a temporary workaround until a patch is available. Restrict access to the application to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.