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medium6.5

CVE-2020-13645

In GNOME glib-networking through 2.64.2, the implementation of GTlsClientConnection skips hostname verification of the server's TLS certificate if the applicat…

Impact

In GNOME glib-networking through 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 before 2.5.11 and 2.6.x before 2.6.1, accept a TLS certificate if the certificate is valid for any host.

Affected products

VendorProductAffected versions
GnomeBalsa
before 2.5.11
Version 2.6.0
GnomeGlib-Networking
before 2.62.4
from 2.64.0 before 2.64.3
CanonicalUbuntu Linux
Versions 16.04, 18.04, 19.10, 20.04
FedoraprojectFedora
Versions 31, 32
NetappCloud Backup
All versions
BroadcomFabric Operating System
All versions

Weakness classification

CWE-295

References