SB2021070606 - Denial of service in PostSRSd
Published: July 6, 2021
Security Bulletin ID
SB2021070606
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2021-35525)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of input when processing certain log data fields from Postfix, such as multiple concatenated email addresses. A remote attacker can force Postfix under certain circumstances pass specially crafted input to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.