SB2021111048 - Red Hat Enterprise Linux 8 update for glib2

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Main Vulnerability Database SB2021111048

SB2021111048 - Red Hat Enterprise Linux 8 update for glib2

Published: November 10, 2021

Security Bulletin ID SB2021111048
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

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

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) UNIX symbolic link following (CVE-ID: CVE-2021-28153)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a symlink following issue, when g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Successful exploitation of this vulnerability may result in privilege escalation.


2) Information disclosure (CVE-ID: CVE-2021-3800)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can trick the victim into opening a specially crafted file to gain unauthorized access to sensitive information on the system.


Remediation

Install update from vendor's website.

References