NULL Pointer Dereference Affecting qemu-img package, versions <15:4.2.0-34.module+el8.3.0+7976+077be4ec


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.37% (73rd percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-2079909
  • published 26 Jul 2021
  • disclosed 14 Jan 2020

How to fix?

Upgrade Centos:8 qemu-img to version 15:4.2.0-34.module+el8.3.0+7976+077be4ec or higher.

NVD Description

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

A NULL pointer dereference was found in the libvirt API responsible introduced in upstream version 3.10.0, and fixed in libvirt 6.0.0, for fetching a storage pool based on its target path. In more detail, this flaw affects storage pools created without a target path such as network-based pools like gluster and RBD. Unprivileged users with a read-only connection could abuse this flaw to crash the libvirt daemon, resulting in a potential denial of service.

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

6.5 medium
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SUSE

6.5 medium