Apple iOS up to 9.3.2 WebKit input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.3$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Apple iOS up to 9.3.2. Impacted is an unknown function of the component WebKit. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2016-4590. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Apple iOS up to 9.3.2 (Smartphone Operating System). This affects some unknown functionality of the component WebKit. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

WebKit in Apple iOS before 9.3.3 and Safari before 9.1.2 mishandles about: URLs, which allows remote attackers to bypass the Same Origin Policy via a crafted web site.

The weakness was released 07/18/2016 by Obscure with Tencent as HT206902 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2016-4590 since 05/11/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/05/2022). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

An origin inheritance issue existed in parsing of about: URLs. This was addressed through improved validation of security origins.

The vulnerability scanner Nessus provides a plugin with the ID 93264 (Fedora 23 : webkitgtk4 (2016-d957ffbac1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196576 (Ubuntu Security Notification for Webkit2gtk Vulnerabilities (USN-3079-1)).

Upgrading to version 9.3.3 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 Tenable (93264) and SecurityFocus (BID 91835†). Entries connected to this vulnerability are available at VDB-89671, VDB-89672, VDB-89673 and VDB-89674. 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: 5.3

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔍

CVSSv2info

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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93264
Nessus Name: Fedora 23 : webkitgtk4 (2016-d957ffbac1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 864497
OpenVAS Name: Ubuntu Update for webkit2gtk USN-3079-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS 9.3.3

Timelineinfo

05/11/2016 🔍
07/18/2016 +68 days 🔍
07/18/2016 +0 days 🔍
07/18/2016 +0 days 🔍
07/19/2016 +1 days 🔍
07/21/2016 +2 days 🔍
09/02/2016 +43 days 🔍
09/05/2022 +2194 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT206902
Researcher: Obscure
Organization: Tencent
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4590 (🔍)
GCVE (CVE): GCVE-0-2016-4590
GCVE (VulDB): GCVE-100-89721
SecurityFocus: 91835 - WebKit Content Spoofing and Cross Site Scripting Vulnerabilities
SecurityTracker: 1036343

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

Entryinfo

Created: 07/19/2016 16:34
Updated: 09/05/2022 15:14
Changes: 07/19/2016 16:34 (70), 03/03/2019 10:51 (15), 09/05/2022 15:14 (4)
Complete: 🔍
Cache ID: 216::103

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

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