Improper Input Validation Affecting perf package, versions <0:4.18.0-348.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.32% (71st percentile)

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  • Snyk ID SNYK-RHEL8-PERF-4143965
  • published 26 Jul 2021
  • disclosed 12 May 2021

How to fix?

Upgrade RHEL:8 perf to version 0:4.18.0-348.el8 or higher.
This issue was patched in RHSA-2021:4356.

NVD Description

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

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets.

CVSS Scores

version 3.1
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NVD

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

4.3 medium
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SUSE

6.5 medium