Information disclosure in Gnome GLib - CVE-2020-6750
Published: January 16, 2020 / Updated: February 24, 2020
Vulnerability identifier: #VU24350
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-6750
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Gnome GLib
glib (Alpine package)
glib2
mingw-glib2
Fedora
glib (Alpine package)
glib2
mingw-glib2
Fedora
How to mitigate CVE-2020-6750
Install update from vendor's website.
Gnome GLib - update to 2.63.6
glib2 - addressed in versions 2.60.7-3.fc30, 2.62.4-2.fc31
mingw-glib2 - update to 2.62.4-2.fc31
glib2 - addressed in versions 2.60.7-3.fc30, 2.62.4-2.fc31
mingw-glib2 - update to 2.62.4-2.fc31