CVE-2020-27931
Apple macOS libFontParser TwOFFStream TTF Parsing Out-Of-Bounds Read Information Disclosure Vulnerability
Severity Score
Exploit Likelihood
Affected Versions
6Public Exploits
0Exploited in Wild
-Decision
Descriptions
A memory corruption issue existed in the processing of font files. This issue was addressed with improved input validation. This issue is fixed in iOS 14.0 and iPadOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1, watchOS 7.0, tvOS 14.0. Processing a maliciously crafted font file may lead to arbitrary code execution.
Se presentó un problema de corrupción de memoria en un procesamiento de archivos de fuentes. Este problema es abordado con una comprobación de la entrada mejorada. Este problema es corregido en iOS versión 14.0 y iPadOS versión 14.0, macOS Big Sur versión 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur versión 11.0.1, watchOS versión 7.0, tvOS versión 14.0. El procesamiento de un archivo fuente diseñado maliciosamente puede conllevar a una ejecución de código arbitraria.
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Apple macOS. Interaction with the libFontParser 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 font can trigger a read past the end of an allocated data structure. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.
macOS Big Sur 11.1, Security Update 2020-001 Catalina, and Security Update 2020-007 Mojave address buffer overflow, bypass, code execution, denial of service, information leakage, integer overflow, out of bounds read, out of bounds write, and use-after-free vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-10-27 CVE Reserved
- 2020-12-08 CVE Published
- 2024-08-04 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-787: Out-of-bounds Write
CAPEC
References (5)
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