USN-5816-2

USN-5816-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Niklas Baumstark discovered that a compromised web child process of Firefox could disable web security opening restrictions, leading to a new child process being spawned within the file:// context. An attacker could potentially exploits this to obtain sensitive information. (CVE-2023-23597)

Tom Schuster discovered that Firefox was not performing a validation check on GTK drag data. An attacker could potentially exploits this to obtain sensitive information. (CVE-2023-23598)

Vadim discovered that Firefox was not properly sanitizing a curl command output when copying a network request from the developer tools panel. An attacker could potentially exploits this to hide and execute arbitrary commands. (CVE-2023-23599)

Luan Herrera discovered that Firefox was not stopping navigation when dragging a URL from a cross-origin iframe into the same tab. An attacker potentially exploits this to spoof the user. (CVE-2023-23601)

Dave Vandyke discovered that Firefox did not properly implement CSP policy when creating a WebSocket in a WebWorker. An attacker who was able to inject markup into a page otherwise protected by a Content Security Policy may have been able to inject an executable script. (CVE-2023-23602)

Dan Veditz discovered that Firefox did not properly implement CSP policy on regular expression when using console.log. An attacker potentially exploits this to exfiltrate data from the browser. (CVE-2023-23603)

Nika Layzell discovered that Firefox was not performing a validation check when parsing a non-system html document via DOMParser::ParseFromSafeString. An attacker potentially exploits this to bypass web security checks. (CVE-2023-23604)

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. (CVE-2023-23605, CVE-2023-23606)