Vulnerability in Broadcom Fabric Operating System
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.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.020 (79.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Broadcom Fabric Operating System
- GNOME Balsa — versions 2.6.0
- GNOME Glib-Networking
- NetApp Cloud Backup
- Canonical Ubuntu Linux — versions 16.04, 18.04, 19.10
- Fedoraproject Fedora — versions 31, 32
Weakness classification (CWE)
References
- gitlab.gnome.org/GNOME/glib-networking/-/issues/135 (Exploit, Vendor Advisory)
- gitlab.gnome.org/GNOME/balsa/-/issues/34 (Exploit, Vendor Advisory)
- security.netapp.com/advisory/ntap-20200608-0004/ (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- usn.ubuntu.com/4405-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202007-50 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-13645?
- CVE-2020-13645 is a medium-severity vulnerability in Broadcom Fabric Operating System, classified under Improper Certificate Validation. CVSS score: 6.5/10. Published 2020-05-28.
- How severe is CVE-2020-13645?
- Medium severity. CVSS v3 base score is 6.5 out of 10.