CVE-2020-13645 Security feature bypass in n/a

What is CVE-2020-13645?

CVE-2020-13645 is a medium-severity vulnerability in Broadcom Fabric Operating System, published on 28 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-295

Which versions are affected by CVE-2020-13645?

It affects 6 products.

Products include Broadcom Fabric Operating System, Canonical Ubuntu Linux, Fedoraproject Fedora, Gnome Balsa, Gnome Glib-Networking, Netapp Cloud Backup.

How do I fix CVE-2020-13645?

Upgrade to a fixed version.

Is CVE-2020-13645 being exploited?

There is no known exploitation of CVE-2020-13645 in the wild and no public exploit code.

Other vulnerabilities in Broadcom Fabric Operating System

• CVE-2025-1976 Broadcom Brocade Fabric OS Code Injection Exploited High 8.6
• CVE-2021-22555 Linux Kernel Heap Out-of-Bounds Write Exploited High 8.3
• CVE-2022-33186 Command injection in Brocade Fabric OS Critical 9.8
• CVE-2021-27797 Hardcoded credentials in Brocade Fabric OS Critical 9.8
• CVE-2020-15371 Code injection in Brocade Fabric OS Critical 9.8

All Broadcom Fabric Operating System vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-6440, CLEANSTART-2024-CH43456, DEBIAN-CVE-2020-13645, GHSA-p43h-5x4h-9pp7, MGASA-2020-0314, SUSE-SU-2021:3944-1 and 8 more.