Apple Safari up to 15.3 WebKit use after free

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.9	$5k-$25k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apple Safari up to 15.3. This affects an unknown part of the component WebKit. The manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2022-22620. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Apple Safari up to 15.3 (Web Browser). It has been rated as critical. This issue affects some unknown functionality of the component WebKit. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Monterey 12.2.1, iOS 15.3.1 and iPadOS 15.3.1, Safari 15.3 (v. 16612.4.9.1.8 and 15612.4.9.1.8). 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..

The weakness was disclosed 02/11/2022 as HT213091. It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2022-22620. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/30/2025).

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 02/11/2022 with a due date of 02/25/2022:

Apply updates per vendor instructions.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (685). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Web Browser

Vendor

Apple

Name

Safari

Version

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/05/2022 🔍
02/11/2022 +37 days 🔍
02/11/2022 +0 days 🔍
05/01/2025 +1175 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213091
Status: Confirmed

CVE: CVE-2022-22620 (🔍)
GCVE (CVE): GCVE-0-2022-22620
GCVE (VulDB): GCVE-100-192887
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/11/2022 14:59
Updated: 05/01/2025 19:53
Changes: 02/11/2022 14:59 (40), 02/16/2022 10:42 (1), 04/22/2024 21:05 (23), 05/15/2024 17:15 (3), 06/23/2024 06:10 (2), 09/18/2024 05:29 (1), 01/30/2025 04:21 (29), 05/01/2025 19:53 (3)
Complete: 🔍
Cache ID: 216::103