Improper Authentication Affecting nss-softokn-freebl package, versions <0:3.53.1-11.el8_2


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.22% (60th percentile)

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  • Snyk ID SNYK-RHEL8-NSSSOFTOKNFREEBL-3776754
  • published 26 Jul 2021
  • disclosed 8 Jan 2020

How to fix?

Upgrade RHEL:8 nss-softokn-freebl to version 0:3.53.1-11.el8_2 or higher.
This issue was patched in RHSA-2020:3280.

NVD Description

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

After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.

CVSS Scores

version 3.1
Expand this section

NVD

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

Red Hat

5.3 medium