6.5

CVE-2020-13645: broadcom fabric_operating_system Improper Certificate Validation

CVSS: 6.5v3.1MediumModified
AliasesMGASA-2020-0314SUSE-SU-2021:3944-1SUSE-SU-2021:3997-1
Published 28-05-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-13645 is a medium (CVSS 6.5) Improper Certificate Validation vulnerability in broadcom fabric_operating_system. EPSS estimates a 2.02% chance of exploitation in the next 30 days, higher than 80.6% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
2.02%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Timeline

  1. 28-05-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.02%

Chance of exploitation in the next 30 days

Percentile

81%

Versus all other CVEs

30-day change

+0.05 pp

From 1.97% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.02%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (gitlab.gnome.org)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (gitlab.gnome.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Suse29 products
  • balsa&distro=SUSE Package Hub 15 SP2< 2.6.1-bp153.2.3.1
  • balsa&distro=SUSE Package Hub 15 SP3< 2.6.1-bp153.2.3.1
  • glib-networking&distro=HPE Helion OpenStack 8< 2.48.2-6.3.1
  • glib-networking&distro=SUSE Enterprise Storage 6< 2.54.1-3.6.1
  • glib-networking&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 2.54.1-3.6.1
Opensuse5 products
  • balsa&distro=openSUSE Leap 15.2< 2.6.1-bp153.2.3.1
  • balsa&distro=openSUSE Leap 15.3< 2.6.1-bp153.2.3.1
  • glib-networking&distro=openSUSE Leap 15.2< 2.62.4-lp152.2.3.1
  • glib-networking&distro=openSUSE Leap 15.3< 2.62.4-3.3.1
  • glib-networking&distro=openSUSE Tumbleweed< 2.68.1-1.3
Gnome2 products
Ubuntu2 products
  • balsa< 2.6.0-2ubuntu0.1
  • glib-networking< 2.48.2-1~ubuntu16.04.2 | < 2.56.0-1ubuntu0.1 | < 2.64.2-1ubuntu0.1
Broadcom1 product
Canonical1 product
Debian1 product
  • glib-networking< 2.64.3-2
Fedoraproject1 product
Mageia1 product
  • glib-networking< 2.60.2-1.1.mga7
Netapp1 product

10 vendors · 44 products

References

25 links
Show all 25 references