5.5
CVSSv3

CVE-2021-30656

Published: 08/09/2021 Updated: 12/07/2022
CVSS v2 Base Score: 7.1 | Impact Score: 6.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8
VMScore: 632
Vector: AV:N/AC:M/Au:N/C:C/I:N/A:N

Vulnerability Summary

An access issue was addressed with improved memory management. This issue is fixed in iOS 14.5 and iPadOS 14.5. A malicious application may be able to determine kernel memory layout.

Vulnerability Trend

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apple iphone os

apple ipados

Mailing Lists

<!--X-Body-Begin--> <!--X-User-Header--> Full Disclosure mailing list archives <!--X-User-Header-End--> <!--X-TopPNI--> By Date By Thread </form> <!--X-TopPNI-End--> <!--X-MsgBody--> <!--X-Subject-Header-Begin--> APPLE-SA-2021-04-26-1 iOS 145 and iPadOS 145 <!--X-Subject-Header-End--> <!--X-Head-of-Message--> From: Apple Prod ...

Github Repositories

Useful resources for iOS hacking

iOS Hacking Resources Basics Official references: ARMv8 Instruction Set Overview (short, kinda outdated at this point) ARMv8 Architecture Reference Manual (long) ARM A-Profile Exploration tools (same as above, but in machine readable form) ARM System Architecture Software Standards (ABIs, extensions, etc) Clang Pointer Authentication ABI My own doing: arm64 assembly crash c