Buffer Overflow Affecting firefox package, versions <0:78.8.0-1.el8_3


Severity

Recommended
critical

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.42% (76th percentile)

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  • Snyk IDSNYK-RHEL8-FIREFOX-3959464
  • published26 Jul 2021
  • disclosed23 Feb 2021

Introduced: 23 Feb 2021

CVE-2021-23978  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

Upgrade RHEL:8 firefox to version 0:78.8.0-1.el8_3 or higher.
This issue was patched in RHSA-2021:0655.

NVD Description

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

Mozilla developers reported memory safety bugs present in Firefox 85 and Firefox ESR 78.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.

CVSS Scores

version 3.1