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zdiMickey Jin of Trend Micro Mobile Security Research TeamZDI-21-149
HistoryFeb 04, 2021 - 12:00 a.m.

Apple macOS CoreText TTF Parsing Out-of-Bounds Write Remote Code Execution

2021-02-0400:00:00
Mickey Jin of Trend Micro Mobile Security Research Team
www.zerodayinitiative.com
22

0.001 Low

EPSS

Percentile

39.0%

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apple macOS. Interaction with the CoreText library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the parsing of TTF fonts. Crafted data in a TTF file can trigger a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process.

0.001 Low

EPSS

Percentile

39.0%