SB2019091721 - Red Hat update for patch

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Main Vulnerability Database SB2019091721

SB2019091721 - Red Hat update for patch

Published: September 17, 2019

Security Bulletin ID SB2019091721
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) OS Command Injection (CVE-ID: CVE-2018-20969)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to the "do_ed_script" function in the "pch.c" file does not block strings beginning with a ! character. A remote unauthenticated attacker can trick a victim to open a specially crafted patch file and execute arbitrary OS shell 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-2019-13638)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to insufficient validation of ed style diff payload with shell metacharacters in patch files. A remote attacker can trick the victim to use a specially crafted patch file and execute arbitrary OS commands.


Remediation

Install update from vendor's website.

References