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TI-2020-00539 Aliases CVE-2020-0556GHSA-xjj6-3w9q-h5xv

Improper access control in subsystem for BlueZ before version 5.54 may allow an…

Priority LOW 33Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

Improper access control in subsystem for BlueZ before version 5.54 may allow an unauthenticated user to potentially enable escalation of privilege and denial of service via adjacent access

Why it matters now

EPSS 0.01042 64th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
IntelBlueZ5.54—No fix listedCNA
  • BlueZ VendorIntel Affected 5.54 Fixed in — No fix listed CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:a:bluez:bluez:*:*:*:*:*:*:*:*before 5.54VulnerableBlueZ
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*19.10VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*15.2VulnerableopenSUSE
  • cpe:2.3:a:bluez:bluez:*:*:*:*:*:*:*:* Versions before 5.54 Vulnerable ·BlueZ
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* Versions 19.10 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Versions 15.2 Vulnerable ·openSUSE

Remediation

Red Hat 2 advisories

  • RHSA-2020:4481 Released 2020-11-04 · Red Hat rating Moderate
    bluez security update
    • Red Hat CodeReady Linux Builder (v. 8) bluez-libs-devel-5.50-4.el8
    • Red Hat Enterprise Linux AppStream (v. 8) bluez-cups-5.50-4.el8
    • Red Hat Enterprise Linux BaseOS (v. 8) bluez-5.50-4.el8, bluez-hid2hci-5.50-4.el8, bluez-libs-5.50-4.el8 +1
  • RHSA-2020:4001 Released 2020-09-29 · Red Hat rating Moderate
    bluez security update
    • Red Hat Enterprise Linux Client (v. 7) bluez-5.44-7.el7, bluez-libs-5.44-7.el7
    • Red Hat Enterprise Linux Client Optional (v. 7) bluez-cups-5.44-7.el7, bluez-hid2hci-5.44-7.el7, bluez-libs-devel-5.44-7.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) bluez-5.44-7.el7, bluez-libs-5.44-7.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) bluez-5.44-7.el7, bluez-cups-5.44-7.el7, bluez-hid2hci-5.44-7.el7 +1
    • Red Hat Enterprise Linux Server (v. 7) bluez-5.44-7.el7, bluez-libs-5.44-7.el7, bluez-libs-5.44-7.el7.ppc
    • Red Hat Enterprise Linux Server Optional (v. 7) bluez-5.44-7.el7, bluez-cups-5.44-7.el7, bluez-hid2hci-5.44-7.el7 +2
    • Red Hat Enterprise Linux Workstation (v. 7) bluez-5.44-7.el7, bluez-libs-5.44-7.el7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) bluez-cups-5.44-7.el7, bluez-hid2hci-5.44-7.el7, bluez-libs-devel-5.44-7.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2020:4481
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2020:4481
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:4481
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:4001
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:4001
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2020:4001
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:4001
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:4001
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:4001
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:4001
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:4001
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-0556
  2. 2026-10-03 Alias added: GHSA-xjj6-3w9q-h5xv

References

Patch 1

Advisory 6

  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2017-03684 Improper privilege management in Intel Active Mangement Technology, Intel Small Business… KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-20393 Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attack KEVCVSS 3.1CRITICAL 9.0
  • TI-2015-02024 (1) IQVW32.sys before 1.3.1.0 and (2) IQVW64.sys before 1.3.1.0 in the Intel Ethernet… KEVCVSS 3.1HIGH 7.8
  • TI-2013-04197 The IPMI 2.0 specification supports RMCP+ Authenticated Key-Exchange Protocol (RAKP)… CVSS 3.0HIGH 7.5
  • TI-2022-07265 An issue was discovered in the DNS proxy in Connman through 1.40. CVSS 3.1CRITICAL 9.1
See all 1855 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences