Out-of-Bounds Affecting qemu-img package, versions <15:6.2.0-11.module+el8.6.0+14707+5aa4b42d


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.05% (22nd percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-2819858
  • published 16 Sep 2021
  • disclosed 30 Aug 2021

How to fix?

Upgrade Centos:8 qemu-img to version 15:6.2.0-11.module+el8.6.0+14707+5aa4b42d 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.

In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the "bytes_in_use" field should be less than the "bytes_allocated" field. When it is not, the parsing of the records proceeds into the wild.

CVSS Scores

version 3.1
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NVD

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

7.8 high
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SUSE

7.8 high