SB2019021428 - Fedora 29 update for mgetty

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Main Vulnerability Database SB2019021428

SB2019021428 - Fedora 29 update for mgetty

Published: February 14, 2019 Updated: April 24, 2025

Security Bulletin ID SB2019021428
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) OS Command Injection (CVE-ID: CVE-2018-16741)

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists within mgetty before 1.2.1. In fax/faxq-helper.c, the function do_activate() due to improper sanitization of shell metacharacters. A local user can use ||, &&, or > characters within a file created by the "faxq-helper activate <jobid>" command to execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) OS Command Injection (CVE-ID: CVE-2018-16744)

The vulnerability allows a local authenticated user to execute arbitrary code.

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.


3) Buffer overflow (CVE-ID: CVE-2018-16745)

The vulnerability allows a local authenticated user to execute arbitrary code.

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 a buffer overflow if long untrusted input can reach it.


Remediation

Install update from vendor's website.

References