Apple iOS 4.x memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical was found in Apple iOS 4.x (Smartphone Operating System). Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 09/09/2010 by Masahiro Yamada (TippingPoint) with Verschiedene (siehe Apple Advisory) as HT4334 as confirmed advisory (Website). The advisory is shared at The public release has been coordinated in cooperation with Apple. This vulnerability is known as CVE-2010-1421 since 04/15/2010. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/18/2021). It is expected to see the exploit prices for this product increasing in the near future.

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 47751 (FreeBSD : webkit-gtk2 -- Multiple vulnerabilities (19419b3b-92bd-11df-b140-0015f2db7bde)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks.

Upgrading to version 1.2.3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published before and not just after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 10148.

The vulnerability is also documented in the vulnerability database at Tenable (47751). The entries 4138, 53762, 53588 and 53587 are pretty similar.







CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

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

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 47751
Nessus Name: FreeBSD : webkit-gtk2 -- Multiple vulnerabilities (19419b3b-92bd-11df-b140-0015f2db7bde)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 67711
OpenVAS Name: FreeBSD Ports: webkit-gtk2
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

0-Day Time: 🔍

Upgrade: iOS 1.2.3
TippingPoint: 🔍


04/15/2010 🔍
05/03/2010 +18 days 🔍
06/07/2010 +35 days 🔍
06/07/2010 +0 days 🔍
06/08/2010 +1 days 🔍
06/09/2010 +0 days 🔍
06/11/2010 +2 days 🔍
07/01/2010 +20 days 🔍
09/09/2010 +70 days 🔍
09/17/2010 +8 days 🔍
03/18/2021 +3835 days 🔍



Advisory: HT4334
Researcher: Masahiro Yamada (TippingPoint)
Organization: Verschiedene (siehe Apple Advisory)
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2010-1421 (🔍)

SecurityTracker: 1024067 - Apple Safari Bugs Let Remote Users Execute Arbitrary Code or Access Potentially Sensitive Information
Vulnerability Center: 26251 - Apple Safari \x3C5.0 WebKit ExecCommand JavaScript Function Allows Remote Modification of Clipboard, Medium
SecurityFocus: 40620 - RETIRED: Apple Safari Prior to 5.0 and 4.1 Multiple Security Vulnerabilities
Secunia: 41328 - Apple iOS Multiple Vulnerabilities, Highly Critical
OSVDB: 65314 - Apple Safari WebKit execCommand Function Clipboard Content Manipulation
Vupen: ADV-2010-1373

scip Labs:
See also: 🔍


Created: 09/17/2010 02:00 AM
Updated: 03/18/2021 10:48 AM
Changes: 09/17/2010 02:00 AM (88), 02/28/2017 11:30 AM (11), 03/18/2021 10:48 AM (3)
Complete: 🔍


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