Linux Security
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    ArchLinux: 202006-4: thunderbird: multiple issues

    Date
    140
    Posted By
    The package thunderbird before version 68.9.0-1 is vulnerable to multiple issues including arbitrary code execution, denial of service, man-in-the-middle and private key recovery.
    Arch Linux Security Advisory ASA-202006-4
    =========================================
    
    Severity: High
    Date    : 2020-06-06
    CVE-ID  : CVE-2020-12398 CVE-2020-12399 CVE-2020-12405 CVE-2020-12406
              CVE-2020-12410
    Package : thunderbird
    Type    : multiple issues
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-1179
    
    Summary
    =======
    
    The package thunderbird before version 68.9.0-1 is vulnerable to
    multiple issues including arbitrary code execution, denial of service,
    man-in-the-middle and private key recovery.
    
    Resolution
    ==========
    
    Upgrade to 68.9.0-1.
    
    # pacman -Syu "thunderbird>=68.9.0-1"
    
    The problems have been fixed upstream in version 68.9.0.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    - CVE-2020-12398 (man-in-the-middle)
    
    A security downgrade issue has been found in Thunderbird before 68.9.0.
    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 (private key recovery)
    
    NSS before 3.52.1, as used in Firefox before 77.0 and Thunderbird
    before 68.9.0, has shown timing differences when performing DSA
    signatures, which was exploitable and could eventually leak private
    keys.
    
    - CVE-2020-12405 (denial of service)
    
    When browsing a malicious page in Firefox before 77.0 and Thunderbird
    before 68.9.0, a race condition in our SharedWorkerService could occur
    and lead to a potentially exploitable crash.
    
    - CVE-2020-12406 (arbitrary code execution)
    
    Mozilla Developer Iain Ireland discovered a missing type check in
    Firefox before 77.0 and Thunderbird before 68.9.0 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 (arbitrary code execution)
    
    Mozilla developers Tom Tung and Karl Tomlinson reported memory safety
    bugs present in Firefox 76, Firefox ESR 68.8 and Thunderbird before
    68.9.0. Some of these bugs showed evidence of memory corruption and
    Mozilla presumes that with enough effort some of these could have been
    exploited to run arbitrary code.
    
    Impact
    ======
    
    A remote attacker might be able to recover private keys, downgrade an
    encrypted connection, execute arbitrary code or crash the application.
    
    References
    ==========
    
    https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/
    https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/#CVE-2020-12398
    https://bugzilla.mozilla.org/show_bug.cgi?id=1613623
    https://www.mozilla.org/en-US/security/advisories/mfsa2020-20/
    https://bugzilla.mozilla.org/show_bug.cgi?id=1631576
    https://hg.mozilla.org/projects/nss/rev/daa823a4a29bcef0fec33a379ec83857429aea2e
    https://bugzilla.mozilla.org/show_bug.cgi?id=1631618
    https://bugzilla.mozilla.org/show_bug.cgi?id=1639590
    https://bugzilla.mozilla.org/buglist.cgi?bug_id=1619305%2C1632717
    https://security.archlinux.org/CVE-2020-12398
    https://security.archlinux.org/CVE-2020-12399
    https://security.archlinux.org/CVE-2020-12405
    https://security.archlinux.org/CVE-2020-12406
    https://security.archlinux.org/CVE-2020-12410
    

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