CVE-2023-5725

Una WebExtension maliciosa instalada podría abrir URL arbitrarias, que en las circunstancias adecuadas podrían aprovecharse para recopilar datos confidenciales del usuario. Esta vulnerabilidad afecta a Firefox < 119, Firefox ESR < 115.4 y Thunderbird < 115.4.1.

The Mozilla Foundation Security Advisory describes this flaw as: A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be leveraged to collect sensitive user data.

USN-6456-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. Kelsey Gilbert discovered that Firefox did not properly manage certain browser prompts and dialogs due to an insufficient activation-delay. An attacker could potentially exploit this issue to perform clickjacking. Daniel Veditz discovered that Firefox did not properly validate a cookie containing invalid characters. An attacker could potentially exploit this issue to cause a denial of service. Shaheen Fazim discovered that Firefox did not properly validate the URLs open by installed WebExtension. An attacker could potentially exploit this issue to obtain sensitive information.