#VU22642 Buffer Over-read in tnef - CVE-2019-18849
Published: November 11, 2019
Vulnerability identifier: #VU22642
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-18849
CWE-ID: CWE-126
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
tnef
tnef
Software vendor:
verdammelt
verdammelt
Description
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 updates from vendor's website.