Covert Timing Channel Affecting nss package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.13% (49th percentile)

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  • Snyk ID SNYK-RHEL8-NSS-1340367
  • published 26 Jul 2021
  • disclosed 9 Sep 2020

How to fix?

There is no fixed version for RHEL:8 nss.

NVD Description

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

The Raccoon attack is a timing attack on DHE ciphersuites inherit in the TLS specification. To mitigate this vulnerability, Firefox disabled support for DHE ciphersuites.

CVSS Scores

version 3.1
Expand this section

NVD

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

Red Hat

5.9 medium