CVE-2021-3716 Affecting libvirt package, versions <0:8.0.0-5.module+el8.6.0+847+b490afdd


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.1% (45th percentile)

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  • Snyk IDSNYK-ROCKY8-LIBVIRT-3207095
  • published5 Jan 2023
  • disclosed2 Mar 2022

Introduced: 2 Mar 2022

CVE-2021-3716  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 libvirt to version 0:8.0.0-5.module+el8.6.0+847+b490afdd or higher.
This issue was patched in RLSA-2022:1759.

NVD Description

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

A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.

CVSS Scores

version 3.1