Resource Exhaustion Affecting dbus-libs package, versions <1:1.12.8-10.el8_2



    Attack Complexity Low
    Scope Changed
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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5.5 medium
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Red Hat
6.5 medium
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5.5 medium

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  • published 26 Jul 2021
  • disclosed 4 Jun 2020

How to fix?

Upgrade Centos:8 dbus-libs to version 1:1.12.8-10.el8_2 or higher.

NVD Description

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

An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.