Improper Certificate Validation Affecting balsa package, versions <2.6.0-2ubuntu0.1


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
2.02% (81st percentile)

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  • Snyk IDSNYK-UBUNTU2004-BALSA-579340
  • published28 May 2020
  • disclosed28 May 2020

Introduced: 28 May 2020

CVE-2020-13645  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 balsa to version 2.6.0-2ubuntu0.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream balsa package and not the balsa package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1