Apple iOS up to 8.4.1 CoreCrypto Private Key memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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3.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Apple iOS up to 8.4.1. It has been rated as problematic. The impacted element is an unknown function of the component CoreCrypto. The manipulation leads to memory corruption (Private Key). This vulnerability is uniquely identified as CVE-2015-5874. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple iOS up to 8.4.1 (Smartphone Operating System). It has been rated as problematic. This issue affects an unknown function of the component CoreCrypto. The manipulation with an unknown input leads to a memory corruption vulnerability (Private Key). 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. The summary by CVE is:

CoreText in Apple iOS before 9 and iTunes before 12.3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted font file.

The weakness was disclosed 09/16/2015 by John Villamil with Yahoo Pentest Team as HT205212 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2015-5874 since 08/06/2015. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 06/15/2022). 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 86001 (Apple iTunes < 12.3 Multiple Vulnerabilities (credentialed check)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124144 (Apple iTunes Prior to 12.3 Multiple Vulnerabilities (APPLE-SA-2015-09-16-3)).

Upgrading to version 9 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 (86001) and SecurityFocus (BID 76763†). The entries VDB-9015, VDB-68413, VDB-73748 and VDB-75568 are pretty similar. 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: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Private Key
Class: Memory corruption / Private Key
CWE: CWE-119
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: 86001
Nessus Name: Apple iTunes < 12.3 Multiple Vulnerabilities (credentialed check)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 802962
OpenVAS Name: Apple iTunes Multiple Vulnerabilities Sep15 (Windows)
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

Timelineinfo

08/06/2015 🔍
09/16/2015 +41 days 🔍
09/16/2015 +0 days 🔍
09/16/2015 +0 days 🔍
09/18/2015 +2 days 🔍
09/18/2015 +0 days 🔍
06/15/2022 +2462 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205212
Researcher: John Villamil
Organization: Yahoo Pentest Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5874 (🔍)
GCVE (CVE): GCVE-0-2015-5874
GCVE (VulDB): GCVE-100-77777
SecurityFocus: 76763 - Apple iOS and iTunes Multiple Memory Corruption Vulnerabilities
SecurityTracker: 1033609

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

Entryinfo

Created: 09/18/2015 13:09
Updated: 06/15/2022 22:58
Changes: 09/18/2015 13:09 (52), 12/25/2017 12:27 (22), 06/15/2022 22:43 (3), 06/15/2022 22:58 (1)
Complete: 🔍
Cache ID: 216::103

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

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