VDB-10388 · CVE-2013-5128 · BID 52107

Apple iOS up to 6.1.4 WebKit memory corruption

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.

A vulnerability, which was classified as very critical, has been found in Apple iOS up to 6.1.4 (Smartphone Operating System). Affected by this issue is an unknown function of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

WebKit, as used in Apple iOS before 7, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2013-09-18-2.

The weakness was presented 09/18/2013 with Apple as APPLE-SA-2013-09-18-2 iOS 7 as confirmed mailinglist post (Website). The advisory is shared for download at prod.lists.apple.com. The mailinglist post contains:

Multiple memory corruption issues existed in WebKit. These issues were addressed through improved memory handling.
This vulnerability is handled as CVE-2013-5128 since 08/15/2013. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/25/2021). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 70257 (Apple TV < 6.0 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121756 (Apple iTunes Prior to 11.1.4 Multiple Vulnerabilities (HT6001)).

Upgrading to version iOS 7.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (70257). zdnet.com is providing further details. See 4661, 5610, 8303 and 8559 for similar entries.







CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 70257
Nessus Name: Apple TV < 6.0 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: iOS iOS 7.0


02/21/2012 🔍
08/15/2013 +541 days 🔍
09/18/2013 +34 days 🔍
09/18/2013 +0 days 🔍
09/19/2013 +0 days 🔍
09/19/2013 +0 days 🔍
09/20/2013 +1 days 🔍
10/01/2013 +11 days 🔍
05/25/2021 +2793 days 🔍


Vendor: apple.com

Advisory: APPLE-SA-2013-09-18-2 iOS 7
Organization: Apple
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-5128 (🔍)
SecurityTracker: 1029054
SecurityFocus: 52107
Secunia: 54886 - Apple iOS Multiple Vulnerabilities, Highly Critical

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


Created: 09/20/2013 10:34 AM
Updated: 05/25/2021 04:16 PM
Changes: 09/20/2013 10:34 AM (72), 03/25/2019 07:43 PM (2), 05/25/2021 04:08 PM (2), 05/25/2021 04:16 PM (2)
Complete: 🔍


No comments yet. Languages: en.

Please log in to comment.

Do you know our Splunk app?

Download it now for free!