Use After Free Affecting bluez-libs-devel package, versions <0:5.52-4.el8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
4.24% (90th percentile)

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  • Snyk IDSNYK-RHEL8-BLUEZLIBSDEVEL-3973774
  • published26 Jul 2021
  • disclosed6 Sept 2020

Introduced: 6 Sep 2020

CVE-2020-27153  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bluez-libs-devel to version 0:5.52-4.el8 or higher.
This issue was patched in RHSA-2021:1598.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bluez-libs-devel package and not the bluez-libs-devel package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event.

CVSS Base Scores

version 3.1