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CVE-2020-27935 is a vulnerability in Apple operating systems (iOS, iPadOS, macOS, watchOS, tvOS) where a sandboxed process could circumvent sandbox restrictions due to multiple logic issues. The vulnerability was addressed by Apple in iOS 14.2, iPadOS 14.2, macOS Big Sur 11.0.1, watchOS 7.1, and tvOS 14.2.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a proof-of-concept exploit for CVE-2020-27935, a macOS App Store sandbox escape vulnerability affecting macOS 10.15 (Catalina) and early 11.0 betas. The exploit is implemented in Objective-C (main.m) and demonstrates how a malicious App Store application can manipulate the Objective-C runtime to execute code before the sandbox is initialized. By patching references to the sandbox initializer (libsecinit_initializer), the exploit disables sandbox enforcement, allowing the application to access files outside its container. The provided demo attempts to read '~/Documents/SecretDocument.txt', which would normally be inaccessible to a sandboxed app. The repository includes build files (Makefile), entitlements (ent.xml), and metadata (Info.plist). The exploit is a local privilege escalation and does not involve network communication or remote attack vectors. It is a POC and not weaponized, but demonstrates a critical security flaw in macOS sandboxing prior to Apple's fix in macOS 11.0.
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