[MFSA-2021-20] Security Vulnerabilities fixed in Firefox 88.0.1, Firefox for Android 88.1.3

Severity Critical
Affected Packages 2
Fixed Packages 2
CVEs 2
  • CVE-2021-29952: Race condition in Web Render Components (high)
    When Web Render components were destructed, a race condition could have caused undefined behavior, and we presume that with enough effort may have been exploitable to run arbitrary code.

  • CVE-2021-29953: Universal Cross-Site Scripting via pop-up prompts (critical)
    By triggering multiple pop-up prompts containing <code>javascript:</code> URLs, a malicious webpage could have forced a Firefox for Android user into executing attacker-controlled JavaScript in the context of another domain, resulting in a Universal Cross-Site Scripting vulnerability.
    Note: This issue only affected Firefox for Android. Other operating systems are unaffected.

Package Affected Version
pkg:mozilla/Firefox?os=android < 88.1.3
pkg:mozilla/Firefox < 88.0.1
Package Fixed Version
pkg:mozilla/Firefox?os=android = 88.1.3
pkg:mozilla/Firefox = 88.0.1
ID
MFSA-2021-20
Severity
critical
URL
https://www.mozilla.org/en-US/security/advisories/mfsa2021-20
Published
2021-05-05T00:00:00
(3 years ago)
Modified
2021-05-05T00:00:00
(3 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:mozilla/Firefox?os=android Firefox < 88.1.3
Fixed pkg:mozilla/Firefox?os=android Firefox = 88.1.3
Affected pkg:mozilla/Firefox Firefox < 88.0.1
Fixed pkg:mozilla/Firefox Firefox = 88.0.1
# 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
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