Incorrect Calculation of Buffer Size Affecting qemu-img package, versions <15:4.2.0-48.module+el8.4.0+10368+630e803b


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.05% (18th percentile)

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  • Snyk ID SNYK-CENTOS8-QEMUIMG-2105199
  • published 26 Jul 2021
  • disclosed 20 Apr 2020

How to fix?

Upgrade Centos:8 qemu-img to version 15:4.2.0-48.module+el8.4.0+10368+630e803b 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.

iscsi_aio_ioctl_cb in block/iscsi.c in QEMU 4.1.0 has a heap-based buffer over-read that may disclose unrelated information from process memory to an attacker.

CVSS Scores

version 3.1
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NVD

3.8 low
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    Low
  • Integrity (I)
    None
  • Availability (A)
    None
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Red Hat

3.8 low
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SUSE

5.5 medium