Out-of-Bounds Write Vulnerability in Mozilla Updater

CVE-2018-12379 · MEDIUM Severity

AV:L/AC:L/AU:N/C:P/I:P/A:P

When the Mozilla Updater opens a MAR format file which contains a very long item filename, an out-of-bounds write can be triggered, leading to a potentially exploitable crash. This requires running the Mozilla Updater manually on the local system with the malicious MAR file in order to occur. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.

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