Apple Safari up to 9.1.1 WebKit Page Loading memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Apple Safari up to 9.1.1 (Web Browser). It has been classified as critical. Affected is an unknown code block of the component WebKit Page Loading. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 07/18/2016 by Chris Vienneau (Mikhail) with Mitsui Bussan Secure Directions as HT206900 as confirmed advisory (Website). The advisory is available at This vulnerability is traded as CVE-2016-4584 since 05/11/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 09/05/2022). The advisory points out:

Multiple memory corruption issues were addressed through improved memory handling.

The vulnerability scanner Nessus provides a plugin with the ID 92358 (Mac OS X : Apple Safari < 9.1.2 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 370111 (Apple Safari 9.1.2 Not Installed (APPLE-SA-2016-07-18-5)).

Upgrading to version 9.1.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (92358). The entries 89671, 89672, 89673 and 89674 are pretty similar.






  • commercial

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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VulDB Base Score: 🔍
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 92358
Nessus Name: Mac OS X : Apple Safari < 9.1.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802925
OpenVAS Name: Apple Safari Multiple Vulnerabilities December16 (Mac OS X)
OpenVAS File: 🔍
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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Upgrade: Safari 9.1.2


05/11/2016 🔍
07/18/2016 +68 days 🔍
07/18/2016 +0 days 🔍
07/18/2016 +0 days 🔍
07/19/2016 +1 days 🔍
07/19/2016 +0 days 🔍
07/21/2016 +2 days 🔍
09/05/2022 +2237 days 🔍



Advisory: HT206900
Researcher: Chris Vienneau (Mikhail)
Organization: Mitsui Bussan Secure Directions
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-4584 (🔍)
SecurityTracker: 1036343
SecurityFocus: 91830 - Apple iOS/tvOS/Safari Multiple Security Vulnerabilities

See also: 🔍


Created: 07/19/2016 04:25 PM
Updated: 09/05/2022 12:15 PM
Changes: 07/19/2016 04:25 PM (66), 03/03/2019 09:08 AM (19), 09/05/2022 12:15 PM (3)
Complete: 🔍


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