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Rewterz Threat Advisory – Multiple Mozilla Firefox Vulnerabilities

Severity

High

Analysis Summary

CVE-2021-29952

Mozilla Firefox could allow a remote attacker to execute arbitrary code on the system, caused by a race condition in Web Render components. By persuading a victim to visit a specially crafted Web site, an attacker could exploit this vulnerability to execute arbitrary code on the system.
 

CVE-2021-29953

Mozilla Firefox for Android is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability using a specially-crafted URL to execute JavaScript in the context of another domain, once the URL is clicked. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.
 

Impact

  • Cross-Site Scripting
  • Unauthorized Access

Affected Vendors

Mozilla

Affected Products

Mozilla Firefox For Android 88.1.2

Remediation

Refer to Mozilla Foundation Security Advisory 2021-20 for patch, upgrade or suggested workaround information.

https://www.mozilla.org/en-US/security/advisories/mfsa2021-20/

https://www.mozilla.org/en-US/security/advisories/mfsa2021-20/