SB2020092117 - Ubuntu update for tnef
Published: September 21, 2020 Updated: April 23, 2025
Security Bulletin ID
SB2020092117
Severity
Medium
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) Buffer Over-read (CVE-ID: CVE-2019-18849)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the heap-based buffer over-read involving strdup. A remote attacker can write to the victim's ".ssh/authorized_keys" file via an e-mail message with a crafted winmail.dat application/ms-tnef attachment and crash the application.
Remediation
Install update from vendor's website.