Incorrect Calculation of Buffer Size Affecting virt:rhel/libvirt-daemon package, versions <0:6.0.0-35.module+el8.4.0+10230+7a9b21e4


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-RHEL8-VIRT-4033599
  • published26 Jul 2021
  • disclosed20 Apr 2020

Introduced: 20 Apr 2020

CVE-2020-11947  (opens in a new tab)
CWE-131  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade RHEL:8 virt:rhel/libvirt-daemon to version 0:6.0.0-35.module+el8.4.0+10230+7a9b21e4 or higher.
This issue was patched in RHSA-2021:1762.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt:rhel/libvirt-daemon package and not the virt:rhel/libvirt-daemon package as distributed by RHEL. See How to fix? for RHEL: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