#VU29491 Improper validation of certificate with host mismatch in glib-networking - CVE-2020-13645
Published: July 3, 2020
Vulnerability identifier: #VU29491
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-13645
CWE-ID: CWE-297
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
glib-networking
glib-networking
Software vendor:
Gnome Development Team
Gnome Development Team
Description
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists in GNOME glib-networking due to implementation of GTlsClientConnection skips hostname verification of
the server's TLS certificate if the application fails to specify the
expected server identity. A remote attacker can perform a Man-in-he-Middle (MitM) attack and gain access to sensitive information.
Remediation
Install updates from vendor's website.
External links
- https://gitlab.gnome.org/GNOME/balsa/-/issues/34
- https://gitlab.gnome.org/GNOME/glib-networking/-/issues/135
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HLEX2IP62SU6WJ4SK3U766XGLQK3J62O/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TQEQJQ4XFMFCFJTEXKL2ZO3UELBPCKSK/
- https://security.netapp.com/advisory/ntap-20200608-0004/