SB2022110952 - Multiple vulnerabilities in Pale Moon
Published: November 9, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Improper Authorization in Handler for Custom URL Scheme (CVE-ID: CVE-2022-34478)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insecure usage of URI handlers that allow usage of ms-msdt, search, and search-ms protocols. A remote attacker can trick the victim to click on a specially crafted link and execute arbitrary code on the system, if the victim accepts the browser prompt.
The vulnerability affects Firefox on Windows.
2) Input validation error (CVE-ID: CVE-2022-34476)
The vulnerability allows a remote attacker to perform a spoofing attack.
The vulnerability exists due to insufficient validation of an indefinite SEQUENCE inside an indefinite GROUP when parsing ASN.1. A remote attacker can trick the browser into accessing a malformed ASN.1 and perform spoofing attack.
3) Access of Uninitialized Pointer (CVE-ID: CVE-2022-34480)
The vulnerability allows a remote attacker to crash the browser.
The vulnerability exists due to a boundary error within the lg_init() function when handling several allocations. A remote attacker can cause browser crash.
4) Error Handling (CVE-ID: CVE-2022-34472)
The vulnerability allows a remote attacker to influence browser behavior.
The vulnerability exists due to improper error handling when processing unavailable PAC file. If a PAC URL is set and the server that hosts the PAC is unreachable, OCSP requests are blocked, resulting in incorrect error pages being shown.
5) Security features bypass (CVE-ID: CVE-2022-34475)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper handling of SVG <use> tags that referenced a same-origin document. A remote attacker can bypass the HTML Sanitizer API by referencing a same-origin JavaScript file containing the script to be executed.
6) Security features bypass (CVE-ID: CVE-2022-34473)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper handling of thexlink:hrefattribute of SVG <use> tags. A remote attacker can bypass the HTML Sanitizerand perform XSS attacks.7) Integer overflow (CVE-ID: CVE-2022-34481)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in the nsTArray_Impl::ReplaceElementsAt() function. A remote attacker can trick the victim to visit a specially crafted website, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.