SB2023050417 - Amazon Linux AMI update for glib2
Published: May 4, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) NULL pointer dereference (CVE-ID: CVE-2018-16428)
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to NULL pointer dereference in g_markup_parse_context_end_parse() in gmarkup.c. A local attacker can execute a specially crafted application or file that submits malicious input and cause the service to crash.
2) Out-of-bounds read (CVE-ID: CVE-2018-16429)
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to out-of-bounds read vulnerability in g_markup_parse_context_parse() in gmarkup.c, related to utf8_str(). A local attacker can execute a specially crafted application or file that submits malicious input and cause the service to crash.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-12450)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the application applies default directory permissions to files while copying them in file_copy_fallback() function in gio/gfile.c. A local user can interfere with the copying operation and gain access to otherwise restricted files, as the application applies correct access permissions after the file was copied only.
Such application behavior allows a local user to access potentially sensitive data or modify file contents in case directory permissions that were applied to the file allow such operations.
4) Incorrect default permissions (CVE-ID: CVE-2019-13012)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions for files and folders that are set by the application. A local user with access to the system can view contents of files and directories or modify them.
5) 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.
6) 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.
7) Input validation error (CVE-ID: CVE-2023-24593)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when handling a text-form variant. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
8) Input validation error (CVE-ID: CVE-2023-25180)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when handling a serialised variant. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.