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AUSCERT External Security Bulletin Redistribution
ESB-2022.2513
MFSA 2022-19 Security Vulnerabilities fixed in Firefox 100.0.2, Firefox for
Android 100.3.0, Firefox ESR 91.9.1, Thunderbird 91.9.1
23 May 2022
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AusCERT Security Bulletin Summary
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Product: Firefox
Firefox ESR
Thunderbird
Publisher: Mozilla
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Android
Resolution: Patch/Upgrade
CVE Names: CVE-2022-1802 CVE-2022-1529
Original Bulletin:
https://www.mozilla.org/en-US/security/advisories/mfsa2022-19/
Comment: CVSS (Max): 7.5 CVE-2022-1802 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: SUSE
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
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Mozilla Foundation Security Advisory 2022-19
Security Vulnerabilities fixed in Firefox 100.0.2, Firefox for Android 100.3.0,
Firefox ESR 91.9.1, Thunderbird 91.9.1
Announced: May 20, 2022
Impact: critical
Products: Firefox, Firefox ESR, Firefox for Android, Thunderbird
Fixed in: Firefox 100.0.2
Firefox ESR 91.9.1
Firefox for Android 100.3
Thunderbird 91.9.1
# CVE-2022-1802: Prototype pollution in Top-Level Await implementation
Reporter: Manfred Paul via Trend Micro's Zero Day Initiative
Impact: critical
Description
If an attacker was able to corrupt the methods of an Array object in JavaScript
via prototype pollution, they could have achieved execution of
attacker-controlled JavaScript code in a privileged context.
References
o Bug 1770137
# CVE-2022-1529: Untrusted input used in JavaScript object indexing, leading to
prototype pollution
Reporter: Manfred Paul via Trend Micro's Zero Day Initiative
Impact: critical
Description
An attacker could have sent a message to the parent process where the contents
were used to double-index into a JavaScript object, leading to prototype
pollution and ultimately attacker-controlled JavaScript executing in the
privileged parent process.
References
o Bug 1770048
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