SB2021050518 - Multiple vulnerabilities in Firefox for Android

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Main Vulnerability Database SB2021050518

SB2021050518 - Multiple vulnerabilities in Firefox for Android

Published: May 5, 2021

Security Bulletin ID SB2021050518
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Universal cross-site scripting (CVE-ID: CVE-2021-29953)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Amber


The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary JavaScript in the context of another domain.

Successful exploitation of this vulnerability may allow a remote attacker to compromise the affected system.


2) Race condition (CVE-ID: CVE-2021-29952)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition in Web Render components. A remote attacker can create a specially crafted web page, trick the victim into opening it and execute arbitrary code on the system.


Remediation

Install update from vendor's website.

References