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[MFSA-2020-22] Security Vulnerabilities fixed in Thunderbird 68.9.0

Severity High
Affected Packages 1
Fixed Packages 1
CVEs 5
Info Packages References Vulnerabilities

In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.

  • CVE-2020-12398: Security downgrade with IMAP STARTTLS leads to information leakage (high)
    If Thunderbird is configured to use STARTTLS for an IMAP
    server, and the server sends a PREAUTH response, then
    Thunderbird will continue with an unencrypted connection,
    causing email data to be sent without protection.

  • CVE-2020-12399: Timing attack on DSA signatures in NSS library (high)
    NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys.

  • CVE-2020-12405: Use-after-free in SharedWorkerService (high)
    When browsing a malicious page, a race condition in our SharedWorkerService could occur and lead to a potentially exploitable crash.

  • CVE-2020-12406: JavaScript Type confusion with NativeTypes (high)
    Mozilla developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code.

  • CVE-2020-12410: Memory safety bugs fixed in Thunderbird 68.9.0 (high)
    Mozilla developers Tom Tung and Karl Tomlinson reported memory safety bugs present in Firefox 68.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.

Package Affected Version
pkg:mozilla/Thunderbird < 68.9.0
Package Fixed Version
pkg:mozilla/Thunderbird = 68.9.0
ID
MFSA-2020-22
Severity
high
URL
https://www.mozilla.org/en-US/security/advisories/mfsa2020-22
Published
2020-06-02T00:00:00
(4 years ago)
Modified
2020-06-02T00:00:00
(4 years ago)
Other Advisories
Type Package URL Namespace Name / Product Version Distribution / Platform Arch Patch / Fix
Affected pkg:mozilla/Thunderbird Thunderbird < 68.9.0
Fixed pkg:mozilla/Thunderbird Thunderbird = 68.9.0
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories Exploits PoC Pubblication Date Modification Date
# CVE Description CVSS EPSS EPSS Trend (30 days) Affected Products Weaknesses Security Advisories PoC Pubblication Date Modification Date