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
    4.97% (93rd percentile)

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  • Snyk ID SNYK-RHEL8-BLUEZLIBSDEVEL-3971215
  • published 26 Jul 2021
  • disclosed 6 Sep 2020

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 Scores

version 3.1
Expand this section

NVD

8.6 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    High
Expand this section

Red Hat

8.8 high
Expand this section

SUSE

6.8 medium