Heap-based Buffer Overflow Affecting qemu-kvm-block-iscsi package, versions *


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.42% (75th percentile)

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  • Snyk ID SNYK-RHEL8-QEMUKVMBLOCKISCSI-4407342
  • published 26 Jul 2021
  • disclosed 23 Jan 2020

How to fix?

There is no fixed version for RHEL:8 qemu-kvm-block-iscsi.

NVD Description

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

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.

CVSS Scores

version 3.1
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NVD

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

6 medium
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SUSE

8.6 high