Multiple vulnerabilities in Mozilla Thunderbird

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.

Original advisories

• MFSA2021-47

Related products

• Mozilla-Thunderbird

CVE list

• CVE-2021-38501
  critical
• CVE-2021-38496
  critical
• CVE-2021-38500
  critical
• CVE-2021-32810
  critical
• CVE-2021-38497
  high
• CVE-2021-38498
  critical
• CVE-2021-38502
  high

Read more

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