CVE-2018-16744
The MITRE CVE dictionary describes this issue as:
An issue was discovered in mgetty before 1.2.1. In fax_notify_mail() in faxrec.c, the mail_to parameter is not sanitized. It could allow for command injection if untrusted input can reach it, because popen is used.
Find out more about CVE-2018-16744 from the MITRE CVE dictionary dictionary and NIST NVD.
CVSS v3 metrics
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 4.1 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | High |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | Low |
| Availability Impact | Low |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | mgetty | Affected |
| Red Hat Enterprise Linux 6 | mgetty | Will not fix |
| Red Hat Enterprise Linux 5 | mgetty | Will not fix |
Mitigation
Make sure the `notify` option in /etc/mgetty+sendfax/mgetty.config does not contain characters that can be possibly interpreted by the shell and that the file is readable and writable only by root.
CVE description copyright © 2017, The MITRE Corporation