SB2020011613 - Information disclosure in GNOME GLib
Published: January 16, 2020 Updated: February 24, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2020-6750)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to an error within the GSocketClient in GNOME GLib when processing proxy_addr field. A remote attacker force the system to connect to a specific server using a real address instead of pre-configured proxy address and gain knowledge of the victim's real IP address.
Exploitation of the vulnerability is timing-dependent and may occur only sporadically depending on network delays.
2) Resource management error (CVE-ID: N/A)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to relative read when calling the g_printerr() function, which could lead to a denial of service from a setuid-root process being used to block access to the TTY for another user. A local user can block access to TTY for another user.
Remediation
Install update from vendor's website.