KLA12051
Multiple vulnerabilities in Mozilla Firefox ESR

Updated: 01/27/2021
Detect date
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01/26/2021
Severity
?
Warning
Description

Multiple vulnerabilities were found in Mozilla Firefox ESR. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code, obtain sensitive information.

Below is a complete list of vulnerabilities:

  1. A security bypass vulnerability can be exploited to bypass security restrictions.
  2. A use-after-free vulnerability can be exploited to potentially cause denial of service.
  3. A memory safety vulnerability can be exploited to to cause denial of service and execute arbitrary code.
  4. OSI vulnerability can be exploited via special crafted PDF file to obtain sensitive information.
  5. A type cinfusion vulnerability in JavaScript can be exploited to cause denial of service.
Affected products

Mozilla Firefox earlier than 78.7

Solution

Update to the latest version
Download Firefox ESR

Original advisories

MFSA2021-04

Impacts
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ACE 
[?]

OSI 
[?]

DoS 
[?]

SB 
[?]
Related products
Mozilla Firefox ESR
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