KLA12320
Multiple vulnerabilities in Mozilla Thunderbird

Updated: 09/29/2023
Detect date
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10/06/2021
Severity
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High
Description

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

Below is a complete list of vulnerabilities:

  1. A bypass security vulnerability in SMTP STARTTLS connections can be exploited to bypass security restrictions and obtain sensitive information.
  2. An use after free vulnerability in nsLanguageAtomService object can be exploited to cause denial of service.
  3. A memory safety vulnerability can be exploited to execute arbitrary code.
  4. A security UI vulnerability in message validation can be exploited to spoof user interface.
  5. An use after free vulnerability in MessageTask can be exploited to cause denial of service.
  6. A data race vulnerability in crossbeam-deque can be exploited to obtain sensitive information.
Affected products

Mozilla Thunderbird earlier than 91.2

Solution

Update to the latest version
Download Thunderbird

Original advisories

MFSA2021-47

Impacts
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ACE 
[?]

OSI 
[?]

DoS 
[?]

SB 
[?]

SUI 
[?]
Related products
Mozilla Thunderbird
CVE-IDS
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