CVE-2021-30802: apple ios Use After Free

Vulnerability summary

CVE-2021-30802 is a high (CVSS 8.8) Use After Free vulnerability in apple ios. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 70.5% of scored vulnerabilities.

Timeline

1. 08-09-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7, tvOS 14.7. Processing maliciously crafted web content may lead to arbitrary code execution.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.