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zdiMickey Jin (@patch1t) of Trend MicroZDI-21-758
HistoryJun 25, 2021 - 12:00 a.m.

Apple macOS CoreText TTF Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

2021-06-2500:00:00
Mickey Jin (@patch1t) of Trend Micro
www.zerodayinitiative.com
53

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. A crafted TTF font can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

0.001 Low

EPSS

Percentile

39.0%