This update for Mozilla Thunderbird to version 60.2.1 fixes multiple issues.

Multiple security issues were fixed in the Mozilla platform as advised in MFSA 2018-25 and MFSA 2018-28.
In general, these flaws cannot be exploited through email in Thunderbird because scripting
is disabled when reading mail, but are potentially risks in browser or browser-like contexts:

- CVE-2018-12359: Prevent buffer overflow using computed size of canvas element (bsc#1098998)
- CVE-2018-12360: Prevent use-after-free when using focus() (bsc#1098998)
- CVE-2018-12361: Prevent integer overflow in SwizzleData (bsc#1098998)
- CVE-2018-12362: Prevent integer overflow in SSSE3 scaler (bsc#1098998)
- CVE-2018-5156: Prevent media recorder segmentation fault when track type is changed during capture (bsc#1098998)
- CVE-2018-12363: Prevent use-after-free when appending DOM nodes (bsc#1098998)
- CVE-2018-12364: Prevent CSRF attacks through 307 redirects and NPAPI plugins (bsc#1098998)
- CVE-2018-12365: Prevent compromised IPC child process listing local filenames (bsc#1098998)
- CVE-2018-12371: Prevent integer overflow in Skia library during edge builder allocation (bsc#1098998)
- CVE-2018-12366: Prevent invalid data handling during QCMS transformations (bsc#1098998)
- CVE-2018-12367: Timing attack mitigation of PerformanceNavigationTiming (bsc#1098998)
- CVE-2018-5187: Various memory safety bugs (bsc#1098998)
- CVE-2018-5188: Various memory safety bugs (bsc#1098998)
- CVE-2018-12377: Use-after-free in refresh driver timers (bsc#1107343)
- CVE-2018-12378: Use-after-free in IndexedDB (bsc#1107343)
- CVE-2017-16541: Proxy bypass using automount and autofs (bsc#1066489)
- CVE-2018-12376: Memory safety bugs fixed in Firefox 62 and Firefox ESR 60.2 (bsc#1107343)
- CVE-2018-12385: Crash in TransportSecurityInfo due to cached data (bsc#1109363)
- CVE-2018-12383: Setting a master password did not delete unencrypted previously stored passwords (bsc#1107343)
- CVE-2018-12389: Fixed memory safety bugs (bsc#1112852)
- CVE-2018-12390: Fixed memory safety bugs (bsc#1112852)
- CVE-2018-12391: Fixed HTTP Live Stream audio data is accessible cross-origin (bsc#1112852)
- CVE-2018-12392: Fixed crash with nested event loops (bsc#1112852)
- CVE-2018-12393: Fixed integer overflow during Unicode conversion while loading JavaScript (bsc#1112852)
    
These non-security issues were fixed:

- Fix date display issues (bsc#1109379)
- Fix start-up crash due to folder name with special characters (bsc#1107772)
- Storing of remote content settings fixed (bsc#1084603)
- Improved message handling and composing
- Improved handling of message templates
- Support for OAuth2 and FIDO U2F
- Various Calendar improvements
- Various fixes and changes to e-mail workflow 
- Various IMAP fixes
- Native desktop notifications
- various theme fixes
- Shift+PageUp/PageDown in Write window
- Gloda attachment filtering
- Mailing list address auto-complete enter/return handling
- Thunderbird hung if HTML signature references non-existent image
- Filters not working for headers that appear more than once