Improper Certificate Validation

Affecting glib-networking package, versions <2.58.0-2+deb10u1

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Overview

Affected versions of this package are vulnerable to Improper Certificate Validation. 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.

Remediation

Upgrade glib-networking to version or higher.

References

CVSS Score

6.5
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    Low
  • Availability
    None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVE
CVE-2020-13645
CWE
CWE-295
Snyk ID
SNYK-DEBIAN10-GLIBNETWORKING-570563
Disclosed
28 May, 2020
Published
28 May, 2020