NULL pointer dereference in OpenDMARC - CVE-2021-34555
Published: December 20, 2021
Vulnerability identifier: #VU59058
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-34555
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
OpenDMARC
OpenDMARC
Software vendor:
Trusted Domain Project
Trusted Domain Project
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when parsing a multi-value From header field. A remote attacker can send a specially crafted message and perform a denial of service attack.
Remediation
Install update from vendor's website.
External 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/VZHZD4WZDYRBB2XVW2EQ4DQ2KYMAGPUO/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2MAT4ZSWPQ5SUTMYCXRXI5SMTWL4AG7E/
- https://github.com/trusteddomainproject/OpenDMARC/releases/tag/rel-opendmarc-1-4-2