Multiple vulnerabilities in Mozilla Thunderbird

Description

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to cause denial of service, bypass security restrictions.

Below is a complete list of vulnerabilities:

1. A use-after-free vulnerability related to Skia library can be exploited remotely to cause denial of service;
2. An integer overflow vulnerability related to Skia library can be exploited remotely to cause denial of service;
3. A buffer overflow vulnerability related to Skia library can be exploited remotely to cause denial of service;
4. A vulnerability related to verification of certain S/MIME signatures can be exploited remotely to bypass security restrictions.

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Technical details

Vulnerability (3) affected only macOS platform.

Original advisories

• Mozilla Foundation Security Advisory 2019-06

Exploitation

Public exploits exist for this vulnerability.

CVE list

• CVE-2018-18335
  critical
• CVE-2018-18356
  critical
• CVE-2019-5785
  high
• CVE-2018-18509
  high

Read more

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