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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2685 MFSA 2022-21 Security Vulnerabilities fixed in Firefox ESR 91.10 1 June 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Mozilla Firefox ESR 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 Original Bulletin: https://www.mozilla.org/en-US/security/advisories/mfsa2022-21/ 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 - --------------------------BEGIN INCLUDED TEXT-------------------- Mozilla Foundation Security Advisory 2022-21 Security Vulnerabilities fixed in Firefox ESR 91.10 Announced: May 31, 2022 Impact: high Products: Firefox ESR Fixed in: Firefox ESR 91.10 # 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 Firefox 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-2022-31742: 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 Firefox 101 and Firefox ESR 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 Firefox 100 and Firefox ESR 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 Firefox 101 and Firefox ESR 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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If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBYpaW8MkNZI30y1K9AQjMgg//ehk3BkpNg2WF7lRdHsCYUS2oglb7Hhrj RpxF3jZP8mLNyuqZNUmIcTe3op7ZpmX+cMyC3LiAwlvIYFIxpRH32N+TG27R8zI6 EdLY4LeELprOl5SPGEoqpnsTsSykIkWX9O0Og6EWWd5Rc8DRRwgvcpLAfmvteNO1 yHwymK3g6Njr6CHh0uy3hLfjQ5GjgZgNW5oBnFTlh0TTRwWkLGUVgbq2xKSh2J+P /h63LeIrsC1O93c+MCUubSHmedO9SrSCFrBgp0QOn+cyVnfQOcYOLOGzqc6a9QqW 2w22reAXKMSI36AcRCeaV0IE4FYVUtEsAoPUN4Consk8E7xZf+ZHz3Iqvb+1oPq9 TvK4dkb1QDWqqjFoYm9bXVRs5wOOBna1W/oGaA6eooam1ck72vJuIQmBlFzP3/hy uUbyP4OdpL9pxFVO57sYvWLJTBZ6pUdSkTQkYWo57CDHJ7d1+Z4wLDtY9T4xkLRv FZflBbYb7ygHaIE8yo/t8AykRuA1DeYiuP102Aj+eIDV2rdP1hdJgNmeCwEBEfen wcsieDA5bvpHX97/8L2hPG7z3dzLUyYY5aVDT+HPa7RhXbKhfrtZdKXxaMjokcdm tb3iMZ99OERyru5FHFOl83iAHJNPVq2TKds7pfZbeUdoJNmKFkw7428N4dY+uonL Lln934apQ4g= =ndXB -----END PGP SIGNATURE-----