CVE-2021-3716 Affecting swtpm-tools package, versions <0:0.7.0-1.20211109gitb79fd91.module+el8.6.0+20659+3dcf7c70


Severity

Recommended
medium

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.1% (44th percentile)

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  • Snyk ID SNYK-ORACLE8-SWTPMTOOLS-2830687
  • published 18 May 2022
  • disclosed 2 Mar 2022

How to fix?

Upgrade Oracle:8 swtpm-tools to version 0:0.7.0-1.20211109gitb79fd91.module+el8.6.0+20659+3dcf7c70 or higher.
This issue was patched in ELSA-2022-1759.

NVD Description

Note: Versions mentioned in the description apply only to the upstream swtpm-tools package and not the swtpm-tools package as distributed by Oracle. See How to fix? for Oracle: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
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NVD

3.1 low
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    Low
Expand this section

Red Hat

3.5 low