Apple iOS up to 5.1.1 International Components for Unicode memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.7$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Apple iOS up to 5.1.1. This affects an unknown function of the component International Components for Unicode. Such manipulation leads to memory corruption. This vulnerability is traded as CVE-2011-4599. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 5.1.1 (Smartphone Operating System). It has been rated as critical. Affected by this issue is some unknown functionality of the component International Components for Unicode. 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:

Stack-based buffer overflow in the _canonicalize function in common/uloc.c in International Components for Unicode (ICU) before 49.1 allows remote attackers to execute arbitrary code via a crafted locale ID that is not properly handled during variant canonicalization.

The weakness was shared 09/19/2012 as APPLE-SA-2012-09-19-1 as confirmed posting (Website). The advisory is shared for download at prod.lists.apple.com. This vulnerability is handled as CVE-2011-4599 since 11/29/2011. 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 04/13/2021). 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 68406 (Oracle Linux 5 / 6 : icu (ELSA-2011-1815)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120907 (Solaris 11 Support Repository Update (SRU) 11.4/11.4b Missing).

Upgrading to version 6.0 eliminates this vulnerability. The problem might be mitigated by replacing the product with Google Android as an alternative. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (71726), Tenable (68406), SecurityFocus (BID 51006†), OSVDB (77698†) and Secunia (SA47146†). The entries VDB-5442, VDB-5443, VDB-6213 and VDB-6151 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 8.7

VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68406
Nessus Name: Oracle Linux 5 / 6 : icu (ELSA-2011-1815)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70714
OpenVAS Name: Debian Security Advisory DSA 2397-1 (icu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Upgrade: iOS 6.0
Alternative: Google Android

Timelineinfo

11/29/2011 🔍
12/09/2011 +10 days 🔍
12/09/2011 +0 days 🔍
12/14/2011 +5 days 🔍
12/26/2011 +12 days 🔍
06/21/2012 +178 days 🔍
09/19/2012 +90 days 🔍
09/19/2012 +0 days 🔍
09/21/2012 +1 days 🔍
07/12/2013 +294 days 🔍
04/13/2021 +2832 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: APPLE-SA-2012-09-19-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-4599 (🔍)
GCVE (CVE): GCVE-0-2011-4599
GCVE (VulDB): GCVE-100-6344

OVAL: 🔍

X-Force: 71726 - International Components for Unicode _canonicalize( ) buffer overflow, High Risk
SecurityFocus: 51006 - International Components for Unicode '_canonicalize( )' Memory Corruption Vulnerability
Secunia: 47146 - International Components for Unicode (ICU) "_canonicalize()" Buffer Overflow Vul, Moderately Critical
OSVDB: 77698
Vulnerability Center: 34111 - International Components for Unicode (ICU) 4.8.1.1 uloc.cpp Remote Out-of-Bounds Read Vulnerability, High

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

Entryinfo

Created: 09/21/2012 13:45
Updated: 04/13/2021 09:47
Changes: 09/21/2012 13:45 (84), 04/09/2017 13:05 (7), 04/13/2021 09:47 (2)
Complete: 🔍
Cache ID: 216:F7B:103

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