Apple iOS up to 8.4.1 AppleKeyStore 7pk security

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 (≈)
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CTI Interest Score
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4.7$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Apple iOS up to 8.4.1 (Smartphone Operating System). This affects an unknown function of the component AppleKeyStore. The manipulation with an unknown input leads to a 7pk security vulnerability. CWE is classifying the issue as CWE-254. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

AppleKeyStore in Apple iOS before 9 allows physically proximate attackers to reset the count of incorrect passcode attempts via a device backup.

The weakness was presented 09/16/2015 by Filippo Bigarella (beist) as HT205212 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2015-5850 since 08/06/2015. The exploitability is told to be difficult. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k 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 attack technique deployed by this issue is T1211 according to MITRE ATT&CK. The advisory points out:

A URL parsing vulnerability existed in HSTS handling. This issue was addressed through improved URL parsing.

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 vulnerability database at SecurityFocus (BID 76764†). See VDB-9015, VDB-68413, VDB-77828 and VDB-77762 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: Filippo Bigarella (beist)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5850 (🔍)
SecurityFocus: 76764 - Apple iOS APPLE-SA-2015-09-16-1 Multiple Security Vulnerabilities
SecurityTracker: 1033609

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

Entryinfo

Created: 09/18/2015 01:08 PM
Updated: 06/15/2022 08:11 PM
Changes: 09/18/2015 01:08 PM (51), 12/24/2017 09:52 AM (13), 06/15/2022 08:11 PM (3)
Complete: 🔍
Cache ID: 18:0BD:40

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