SB2023112821 - Signature validation bypass in OpenDKIM
Published: November 28, 2023
Security Bulletin ID
SB2023112821
Severity
Medium
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security features bypass (CVE-ID: CVE-2022-48521)
The vulnerability allows a remote attacker to bypass implemented security measures.
The vulnerability exists due to improper tracking of ordinal numbers when removing fake Authentication-Results header fields. A remote attacker can create a specially crafted e-mail message with a fake sender address that will be treated as a message having a valid DKIM signature by software that relies on Authentication-Results from OpenDKIM.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.