CVE-2021-34555: Null Pointer Dereference
First published: Thu Jun 10 2021(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Trusteddomain Opendmarc | =1.4.1 | |
| Trusteddomain Opendmarc | =1.4.1.1 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 |
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Reference Links
- https://github.com/trusteddomainproject/OpenDMARC/issues/179
- https://github.com/trusteddomainproject/OpenDMARC/pull/178
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2MAT4ZSWPQ5SUTMYCXRXI5SMTWL4AG7E/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VZHZD4WZDYRBB2XVW2EQ4DQ2KYMAGPUO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZHZD4WZDYRBB2XVW2EQ4DQ2KYMAGPUO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MAT4ZSWPQ5SUTMYCXRXI5SMTWL4AG7E/
Frequently Asked Questions
What is CVE-2021-34555?
CVE-2021-34555 is a vulnerability in OpenDMARC versions 1.4.1 and 1.4.1.1 that allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a multi-value From header field.
How severe is CVE-2021-34555?
CVE-2021-34555 has a severity rating of 7.5 (High).
Which software versions are affected by CVE-2021-34555?
OpenDMARC versions 1.4.1 and 1.4.1.1 are affected by CVE-2021-34555.
How can remote attackers exploit CVE-2021-34555?
Remote attackers can exploit CVE-2021-34555 by sending a multi-value From header field, which triggers a NULL pointer dereference and crashes the application.
Are there any available patches or fixes for CVE-2021-34555?
Yes, patches for CVE-2021-34555 are available. Please refer to the provided references for more information on how to apply the patches.
- collector/nvd-index
- agent/type
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/tags
- agent/event
- agent/description
- agent/first-publish-date
- agent/softwarecombine
- vendor/trusteddomain
- canonical/trusteddomain opendmarc
- version/trusteddomain opendmarc/1.4.1
- version/trusteddomain opendmarc/1.4.1.1
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/33
- version/fedoraproject fedora/34