Published: 28/05/2020 Updated: 27/07/2020
CVSS v2 Base Score: 6.4 | Impact Score: 4.9 | Exploitability Score: 10
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N

Vulnerability Summary

In GNOME glib-networking up to and including 2.64.2, the implementation of GTlsClientConnection skips hostname verification of the server's TLS certificate if the application fails to specify the expected server identity. This is in contrast to its intended documented behavior, to fail the certificate verification. Applications that fail to provide the server identity, including Balsa prior to 2.5.11 and 2.6.x prior to 2.6.1, accept a TLS certificate if the certificate is valid for any host.

Vulnerability Trend

Affected Products

Vendor Product Versions
GnomeBalsa2.5.0, 2.5.1, 2.5.3, 2.5.5, 2.5.6, 2.5.7, 2.5.8, 2.6.0

Vendor Advisories

Debian Bug report logs - #961756 glib-networking: CVE-2020-13645: GTlsClientConnection silently ignores unset server identity Package: src:glib-networking; Maintainer for src:glib-networking is Debian GNOME Maintainers <pkg-gnome-maintainers@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> ...
Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet ...