SB2021042025 - Ubuntu update for clamav
Published: April 20, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Infinite loop (CVE-ID: CVE-2021-1252)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in the Excel XLM macro parsing module. A remote attacker can consume all available system resources and cause denial of service conditions.
2) Out-of-bounds read (CVE-ID: CVE-2021-1404)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the PDF parsing module. A remote attacker can create a specially crafted PDF file, pass it to the application, trigger out-of-bounds read error and read contents of memory on the system.
3) NULL pointer dereference (CVE-ID: CVE-2021-1405)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can send a specially crafted email to the server and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.