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    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 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.

    Published:May 4, 2020
    Last Modified:Nov 21, 2024
    EPS:May 28, 2020
    EPSS Score:0.00569
    CVSS Score:6.5

    Affected Products

    Vendor
    Broadcom
    Product
    Fabric Operating System
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Gnome
    Product
    Balsa
    Vendor
    Gnome
    Product
    Glib-networking
    Vendor
    Netapp
    Product
    Cloud Backup

    Exploits

    https://gitlab.gnome.org/GNOME/balsa/-/issues/34https://gitlab.gnome.org/GNOME/glib-networking/-/issues/135https://gitlab.gnome.org/GNOME/balsa/-/issues/34https://gitlab.gnome.org/GNOME/glib-networking/-/issues/135

    Related CVEs

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    CVE-2025-58380 (CVSS 4.6) — A vulnerability in Brocade Fabric OS before 9.2.1 could allow an authenticated attacker with admin privileges …
    CVE-2026-0383 (CVSS 8.2) — A vulnerability in Brocade Fabric OS could allow an authenticated, local attacker with privileges to access th…
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    CVE-2025-58383 (CVSS 8.4) — A vulnerability in Brocade Fabric OS versions before 9.2.1c2 could allow an administrator-level user to execut…
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    References

    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%40lists.fedoraproject.org/message/HLEX2IP62SU6WJ4SK3U766XGLQK3J62O/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LRCUM22YEWWKNMN2BP5LTVDM5P4VWIXS/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TQEQJQ4XFMFCFJTEXKL2ZO3UELBPCKSK/
    https://security.gentoo.org/glsa/202007-50
    https://security.netapp.com/advisory/ntap-20200608-0004/
    https://usn.ubuntu.com/4405-1/
    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%40lists.fedoraproject.org/message/HLEX2IP62SU6WJ4SK3U766XGLQK3J62O/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LRCUM22YEWWKNMN2BP5LTVDM5P4VWIXS/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TQEQJQ4XFMFCFJTEXKL2ZO3UELBPCKSK/
    https://security.gentoo.org/glsa/202007-50
    https://security.netapp.com/advisory/ntap-20200608-0004/
    https://usn.ubuntu.com/4405-1/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High