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  4. ALSA-2021:4123

[ALSA-2021:4123] firefox security update

Severity Important
Affected Packages 1
CVEs 6
Info Packages References Vulnerabilities

An update for firefox is now available for AlmaLinux AlmaLinux Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 91.3.0 ESR.

Security Fix(es):

  • Mozilla: Use-after-free in HTTP2 Session object

  • Mozilla: Memory safety bugs fixed in Firefox 94 and Firefox ESR 91.3

  • Mozilla: iframe sandbox rules did not apply to XSLT stylesheets (CVE-2021-38503)

  • Mozilla: Use-after-free in file picker dialog (CVE-2021-38504)

  • Mozilla: Firefox could be coaxed into going into fullscreen mode without notification or warning (CVE-2021-38506)

  • Mozilla: Opportunistic Encryption in HTTP2 could be used to bypass the Same-Origin-Policy on services hosted on other ports (CVE-2021-38507)

  • Mozilla: Permission Prompt could be overlaid, resulting in user confusion and potential spoofing (CVE-2021-38508)

  • Mozilla: Javascript alert box could have been spoofed onto an arbitrary domain (CVE-2021-38509)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Package Affected Version
pkg:rpm/almalinux/firefox?arch=x86_64&distro=almalinux-8.4 < 91.3.0-1.el8_4.alma
ID
ALSA-2021:4123
Severity
important
URL
https://errata.almalinux.org/ALSA-2021:4123.html
Published
2021-11-03T19:23:08
(2 years ago)
Modified
2021-11-12T10:20:56
(2 years ago)
Rights
Copyright 2021 AlmaLinux OS
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:rpm/almalinux/firefox?arch=x86_64&distro=almalinux-8.4 almalinux firefox < 91.3.0-1.el8_4.alma almalinux-8.4 x86_64
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories Exploits PoC Pubblication Date Modification Date
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories PoC Pubblication Date Modification Date