RCE in Fehcom S\/qmail
CVE-2020-15955
In s/qmail through 4.0.07, an active MitM can inject arbitrary plaintext commands into a STARTTLS encrypted session between an SMTP client and s/qmail. This allows e-mail messages and user credentials to be sent to the MitM attacker.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.009 (57.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Fehcom S\/qmail
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Patch, x_refsource_MISC, Release Notes, Vendor Advisory)
- cve@mitre.org (Technical Description, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-15955?
- CVE-2020-15955 is a medium-severity vulnerability in Fehcom S\/qmail, classified under Command Injection. CVSS score: 5.9/10. Published 2021-08-17.
- How severe is CVE-2020-15955?
- Medium severity. CVSS v3 base score is 5.9 out of 10.