⚠ Actively exploited
Added to CISA KEV on 2021-11-03. Federal agencies required to patch by 2021-11-17. Required action: Apply updates per vendor instructions..

CVE-2021-30762 — Use After Free in Apple IOS

CWE-416 — Use After FreeCWE-20 — Improper Input Validation9 documents9 sources
Severity
8.8HIGHNVD
EPSS
0.0%
top 85.08%
CISA KEV
KEV
Added 2021-11-03
Due 2021-11-17
Exploit
Exploited in wild
Active exploitation observed
Affected products
2
Apple IOSApple Iphone OS
Timeline
PublishedSep 8
KEV addedNov 3
KEV dueNov 17
Latest updateMay 24
CISA Required Action: Apply updates per vendor instructions.

Description

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 12.5.4. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5apple/iosunspecified — 12.5
▶NVDapple/iphone_os< 12.5.4

🔴Vulnerability Details

4
GHSA
GHSA-gj4g-95xx-7pc7: A use after free issue was addressed with improved memory management↗2022-05-24
▶
CVEList
CVE-2021-30762: A use after free issue was addressed with improved memory management↗2021-09-08
▶
OSV
CVE-2021-30762: A use after free issue was addressed with improved memory management↗2021-09-08
▶
VulnCheck
Apple iOS WebKit Use-After-Free Vulnerability↗2021
▶

📋Vendor Advisories

4
CISA
Apple iOS WebKit Use-After-Free Vulnerability↗2021-11-03
▶
Red Hat
webkitgtk: Use-after-free leading to arbitrary code execution↗2021-07-28
▶
Apple
CVE-2021-30762: iOS 12.5.4↗2021-06-14
▶
Debian
CVE-2021-30762: webkit2gtk - A use after free issue was addressed with improved memory management. This issue...↗2021
▶
CVE-2021-30762 — Use After Free in Apple IOS | cvebase