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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2684 MFSA 2022-22 Security Vulnerabilities fixed in Thunderbird 91.10 1 June 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Mozilla Thunderbird Publisher: Mozilla Operating System: Windows UNIX variants (UNIX, Linux, OSX) Resolution: Patch/Upgrade CVE Names: CVE-2022-31747 CVE-2022-31742 CVE-2022-31741 CVE-2022-31740 CVE-2022-31739 CVE-2022-31738 CVE-2022-31737 CVE-2022-31736 CVE-2022-1834 Original Bulletin: https://www.mozilla.org/en-US/security/advisories/mfsa2022-22/ Comment: CVSS (Max): 7.5* CVE-2022-31747 (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H * Not all CVSS available when published - --------------------------BEGIN INCLUDED TEXT-------------------- Mozilla Foundation Security Advisory 2022-22 Security Vulnerabilities fixed in Thunderbird 91.10 Announced: May 31, 2022 Impact: high Products: Thunderbird Fixed in: Thunderbird 91.10 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-2022-31736: Cross-Origin resource's length leaked Reporter: Luan Herrera Impact: high Description A malicious website could have learned the size of a cross-origin resource that supported Range requests. References o Bug 1735923 # CVE-2022-31737: Heap buffer overflow in WebGL Reporter: Atte Kettunen Impact: high Description A malicious webpage could have caused an out-of-bounds write in WebGL, leading to memory corruption and a potentially exploitable crash. References o Bug 1743767 # CVE-2022-31738: Browser window spoof using fullscreen mode Reporter: Irvan Kurniawan Impact: high Description When exiting fullscreen mode, an iframe could have confused the browser about the current state of fullscreen, resulting in potential user confusion or spoofing attacks. References o Bug 1756388 # CVE-2022-31739: Attacker-influenced path traversal when saving downloaded files Reporter: Chaobin Zhang Impact: high Description When downloading files on Windows, the % character was not escaped, which could have lead to a download incorrectly being saved to attacker-influenced paths that used variables such as %HOMEPATH% or %APPDATA%. This bug only affects Thunderbird for Windows. Other operating systems are unaffected. References o Bug 1765049 # CVE-2022-31740: Register allocation problem in WASM on arm64 Reporter: Gary Kwong Impact: high Description On arm64, WASM code could have resulted in incorrect assembly generation leading to a register allocation problem, and a potentially exploitable crash. References o Bug 1766806 # CVE-2022-31741: Uninitialized variable leads to invalid memory read Reporter: Yaniv Impact: high Description A crafted CMS message could have been processed incorrectly, leading to an invalid memory read, and potentially further memory corruption. References o Bug 1767590 # CVE-2022-1834: Braille space character caused incorrect sender email to be shown for a digitally signed email Reporter: Jonathan von Niessen Impact: high Description When displaying the sender of an email, and the sender name contained the Braille Pattern Blank space character multiple times, Thunderbird would have displayed all the spaces. This could have been used by an attacker to send an email message with the attacker's digital signature, that was shown with an arbitrary sender email address chosen by the attacker. If the sender name started with a false email address, followed by many Braille space characters, the attacker's email address was not visible. Because Thunderbird compared the invisible sender address with the signature's email address, if the signing key or certificate was accepted by Thunderbird, the email was shown as having a valid digital signature. References o Bug 1767816 # CVE-2022-31742: Querying a WebAuthn token with a large number of allowCredential entries may have leaked cross-origin information Reporter: Michal Impact: moderate Description An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals. References o Bug 1730434 # CVE-2022-31747: Memory safety bugs fixed in Thunderbird 91.10 Reporter: Mozilla developers and community Impact: high Description Mozilla developers Andrew McCreight, Nicolas B. Pierron, and the Mozilla Fuzzing Team reported memory safety bugs present in Thunderbird 91.9. 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. References o Memory safety bugs fixed in Thunderbird 91.10 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBYpaW3skNZI30y1K9AQgZ0xAAufGzsynF0L8aORwjuQf9AnxtxcYw5mfT eeDE3NZ6CZl/VAsjqN9hrqRf9S7VfBnpGUSMNQ/8BkCs0oDe6lhR1oHkhaodgy5M Z3jwrWrjhLgJo/xud1G1BtQrGiCA6Tb59VrM568H7k7SJJiWMmoPfmXZ+1Bhs9H3 PjMlPqiC2GrL7xD9GnxL93bOCDc/FrraaZtr0cWmDyokDJgW7IlnOTU1pl/rqqvK JxN0ucmMDel/b06F4fF3qyhAQBDa77rQLDF7r6c2o5PvkgcA7dIXeJXD2LFqoZs7 w2eyodYGztbl0xmPBjeeRrXqnv4hR2bQbtXwYJ7yCrxOFYMyMZ1ksjzRIALjz1p7 DjUVo+At/6lymo+WiphuTJAfsXLEQ5088xdabQB0LE9wEdDkHXP9Ls1+YyCsSLtU 5QkAsEYLSfMnb45rIYHzNMo/MRf7eBEHevKcvhsBxAaUd7ZaqZaLpNEQvqIK1H+a Ia76URnFSBGSmQNHCVyAYQkv8fwILKx0C2C7nAldkmFaucWtPVk+uFOtDV4B0pso yhH7lJqCsfycsucaLpV7qT5PAuvdqXCa4Iwb3yUaqRGeCHDsWh6OjzYt7ES9M9G6 f1Q9lRGSOKbX0L2oIS/wA07fnkKkul6voE/xcORxMiPbP6pCblCvN0JzVEZmM+Jo NjjQ+lyN1Ck= =li32 -----END PGP SIGNATURE-----