Apple iOS up to 10.2 JavaScriptCore String.replace Universal cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple iOS up to 10.2. It has been classified as critical. This vulnerability affects the function String.replace of the component JavaScriptCore. The manipulation leads to cross site scripting (Universal). This vulnerability is uniquely identified as CVE-2017-2492. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple iOS up to 10.2 (Smartphone Operating System) and classified as critical. This issue affects the function String.replace of the component JavaScriptCore. The manipulation with an unknown input leads to a cross site scripting vulnerability (Universal). Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

An issue was discovered in certain Apple products. iOS before 10.3 is affected. Safari before 10.1 is affected. tvOS before 10.2 is affected. The issue involves the "JavaScriptCore" component. It allows remote attackers to conduct Universal XSS (UXSS) attacks via a crafted web site that triggers prototype mishandling.

The bug was discovered 03/27/2018. The weakness was disclosed 04/03/2018 by Gustavo Grieco as HT207600 (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2017-2492 since 12/01/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

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.

Upgrading to version 10.3 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99167) and SecurityFocus (BID 94554†). The entries VDB-95939, VDB-96539, VDB-97603 and VDB-98600 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Name: Universal
Class: Cross site scripting / Universal
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: iOS 10.3

Timelineinfo

11/28/2016 🔍
12/01/2016 +3 days 🔍
03/27/2017 +116 days 🔍
04/03/2017 +7 days 🔍
03/27/2018 +358 days 🔍
04/03/2018 +7 days 🔍
04/03/2018 +0 days 🔍
04/03/2018 +0 days 🔍
01/20/2020 +657 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207600
Researcher: Gustavo Grieco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2492 (🔍)
GCVE (CVE): GCVE-0-2017-2492
GCVE (VulDB): GCVE-100-115547
SecurityFocus: 94554 - WebKit CVE-2016-9642 Memory Corruption Vulnerability

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

Entryinfo

Created: 04/03/2018 14:32
Updated: 01/20/2020 14:35
Changes: 04/03/2018 14:32 (73), 01/20/2020 14:35 (6)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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