Vulnerability identifier: #VU22642
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-126
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
tnef
Universal components / Libraries /
Libraries used by multiple products
Vendor: 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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
tnef: 1.4.10 - 1.4.17
External links
http://github.com/verdammelt/tnef/compare/1.4.17...1.4.18
http://github.com/verdammelt/tnef/pull/40
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.