Out-of-bounds Read Affecting nss-softokn-freebl package, versions <0:3.44.0-7.el8_0


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.9% (83rd percentile)

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  • Snyk ID SNYK-RHEL8-NSSSOFTOKNFREEBL-3438984
  • published 26 Jul 2021
  • disclosed 10 Jul 2019

How to fix?

Upgrade RHEL:8 nss-softokn-freebl to version 0:3.44.0-7.el8_0 or higher.
This issue was patched in RHSA-2019:1951.

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.

When importing a curve25519 private key in PKCS#8format with leading 0x00 bytes, it is possible to trigger an out-of-bounds read in the Network Security Services (NSS) library. This could lead to information disclosure. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

CVSS Scores

version 3.1
Expand this section

SUSE

6.1 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Changed
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None