KLA12128
Multiple vulnerabilities in Mozilla Firefox ESR

Updated: 06/09/2021
Detect date
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03/23/2021
Severity
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High
Description

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

Below is a complete list of vulnerabilities:

  1. A memory safety vulnerability can be exploited to execute arbitrary code.
  2. An information disclosure vulnerability can be exploited via special crafted webpage to obtain sensitive information.
  3. A security UI vulnerability can be exploited via special crafted extention to spoof user interface and obtain sensitive information.
  4. An out of bounds read vulnerability in WebGL can be exploited via special crafted object to cause denial of service or obtain sensitive information.
  5. A transient execution vulnerability can be exploited to obtain sensitive infromation or cause denial of service.
Affected products

Mozilla Firefox ESR earlier than 78.9

Solution

Update to the latest version
Download Firefox ESR

Original advisories

MFSA2021-11

Impacts
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ACE 
[?]

OSI 
[?]

DoS 
[?]

SUI 
[?]
Related products
Mozilla Firefox ESR
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