QID 239677

Date Published: 2021-10-20

QID 239677: Red Hat Update for firefox (RHSA-2021:3791)

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 Server 7 x86_64
Red Hat Enterprise Linux Workstation 7 x86_64
Red Hat Enterprise Linux Desktop 7 x86_64
Red Hat Enterprise Linux for IBM z Systems 7 s390x
Red Hat Enterprise Linux for Power, big endian 7 ppc64
Red Hat Enterprise Linux for Power, little endian 7 ppc64le

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-2021:3791 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239677

    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-2021:3791 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:3791?language=en
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