QID 239665

Date Published: 2021-10-19

QID 239665: Red Hat Update for firefox (RHSA-2021:3756)

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.This update upgrades Firefox to version 91.2.0 ESR.

Security Fix(es): Mozilla: Use-after-free in MessageTask (CVE-2021-38496) Mozilla: Memory safety bugs fixed in Firefox 93, Firefox ESR 78.15, and Firefox ESR 91.2 (CVE-2021-38500) Mozilla: Memory safety bugs fixed in Firefox 93 and Firefox ESR 91.2 (CVE-2021-38501) rust-crossbeam-deque: race condition may lead to double free (CVE-2021-32810) Mozilla: Validation message could have been overlaid on another origin (CVE-2021-38497) Mozilla: Use-after-free of nsLanguageAtomService object (CVE-2021-38498)

Affected Products:

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.2 x86_64
Red Hat Enterprise Linux Server - AUS 8.2 x86_64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.2 s390x
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.2 ppc64le
Red Hat Enterprise Linux Server - TUS 8.2 x86_64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.2 aarch64
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.2 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.2 x86_64

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as High - 6.8 severity.
    • Solution
    Upgrade to the latest packages which contain a patch. Refer to Applying Package Updates to RHEL system for details.

    Refer to Red Hat security advisory RHSA-2021:3756 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239665

    CVE-2021-32810 | CVE-2021-38496 | CVE-2021-38497 | CVE-2021-38498 | CVE-2021-38500 | CVE-2021-38501 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:3756 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:3756?language=en
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