SB2022110947 - Multiple vulnerabilities in Pale Moon

Security Bulletin ID SB2022110947

Severity

High

Patch available

YES

Number of vulnerabilities 6

Exploitation vector Remote access

Highest impact Code execution

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) Unquoted Search Path or Element (CVE-ID: CVE-2022-22736)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to unquoted search path in Firefox installer. A local user with ability to write files into the Firefox installation folder can place a specially crafted library and execute arbitrary code on the system.

The vulnerability affects Firefox for Windows in a non-default installation.

2) Improper Restriction of Rendered UI Layers or Frames (CVE-ID: CVE-2022-22741)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an error resizing a popup while requesting fullscreen access. A remote attacker can trick the victim to open a specially crafted web page, and make the browser unable to leave fullscreen mode.

Successful exploitation of the vulnerability may allow an attacker to perform spoofing attack.

3) Security features bypass (CVE-ID: CVE-2021-4140)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error in iframe sandbox implementation when processing XSLT markup. A remote attacker can bypass iframe sandbox and execute arbitrary JavaScript code in context of arbitrary window.

4) Improper Restriction of Rendered UI Layers or Frames (CVE-ID: CVE-2022-22746)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to a race condition when calling reportValidity. A remote attacker can trick the victim to open a specially crafted web page and bypass the fullscreen notification, which can lead to spoofing attack.

5) OS Command Injection (CVE-ID: CVE-2022-22744)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the "Copy as curl" feature in DevTools. A remote attacker can trick the victim to cope a specially crafted link and execute arbitrary commands on the system, if copied data is pasted into a Powershell prompt.

6) Input validation error (CVE-ID: CVE-2022-22747)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of empty pkcs7 sequence, passed as part of the certificate data. A remote attacker can pass specially crafted certificate to the application and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

https://www.palemoon.org/releasenotes.shtml