Apple iOS up to 10.2 WebKit JavaScript Bindings JSCallbackData input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Apple iOS up to 10.2. The impacted element is the function JSCallbackData of the component WebKit JavaScript Bindings. This manipulation causes input validation. The identification of this vulnerability is CVE-2017-2442. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 10.2 (Smartphone Operating System). It has been declared as problematic. Affected by this vulnerability is the function JSCallbackData of the component WebKit JavaScript Bindings. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality.

The bug was discovered 03/28/2017. The weakness was shared 03/27/2017 by Paul Thomson (lokihardt) with Google Project Zero as HT207617 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2017-2442 since 12/01/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known. The advisory points out:

Multiple validation issues existed in the handling of page loading. This issue was addressed through improved logic.

After 2 weeks, there has been an exploit disclosed. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 99167 (macOS : Apple Safari < 10.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196754 (Ubuntu Security Notification for Webkit2gtk Vulnerabilities (USN-3257-1)). The code used by the exploit is:

"use strict";
 
let f = document.body.appendChild(document.createElement("iframe"));
f.onload = () => {
    f.onload = null;
 
    try {
        let iterator = document.createNodeIterator(document, NodeFilter.SHOW_ALL, f.contentWindow);
        iterator.nextNode();
    } catch (e) {
        e.constructor.constructor("alert(location)")();
    }
};
 
f.src = "https://abc.xyz/";

Upgrading to version 10.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (41800), Tenable (99167) and SecurityFocus (BID 97129†). The entries VDB-95939, VDB-96539, VDB-97603 and VDB-98600 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99167
Nessus Name: macOS : Apple Safari < 10.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802925
OpenVAS Name: Apple Safari Multiple Vulnerabilities-HT207600
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: iOS 10.3

Timelineinfo

12/01/2016 🔍
03/27/2017 +116 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
03/28/2017 +0 days 🔍
04/01/2017 +4 days 🔍
04/03/2017 +2 days 🔍
04/04/2017 +1 days 🔍
04/04/2017 +0 days 🔍
06/30/2025 +3008 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207617
Researcher: Paul Thomson (lokihardt)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2442 (🔍)
GCVE (CVE): GCVE-0-2017-2442
GCVE (VulDB): GCVE-100-98809
SecurityFocus: 97129 - Apple iOS and Safari Multiple Security Vulnerabilities
OSVDB: - CVE-2017-2442 - Apple - Multiple Products - Security Bypass Issue
SecurityTracker: 1038137

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 03/28/2017 11:52
Updated: 06/30/2025 00:34
Changes: 03/28/2017 11:52 (89), 08/28/2020 18:38 (8), 11/21/2022 11:32 (5), 06/30/2025 00:34 (14)
Complete: 🔍
Cache ID: 216:B5D:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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