Security restrictions bypass in msmtp - CVE-2019-8337
Published: February 19, 2019
Vulnerability identifier: #VU17765
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-8337
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Martin Lambers
Affected software:
msmtp
msmtp
Detailed vulnerability description
The vulnerability allows a remote authenticated attacker to bypass security restrictions on the system.
The vulnerability exists due to improper certificate verification when the affected software uses the new system default value for the tls_trust_file command in its default configuration file. A remote attacker can send an email to an SMTP server and bypass certificate verification and conduct further attacks.
How to mitigate CVE-2019-8337
Update to version 1.8.3.