Apple iOS up to 12.0.1 CoreCrypto Prime Number input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$5k-$25k0.00

A vulnerability has been found in Apple iOS up to 12.0.1 (Smartphone Operating System) and classified as critical. This vulnerability affects an unknown code block of the component CoreCrypto. The manipulation with an unknown input leads to a input validation vulnerability (Prime Number). The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 10/30/2018. The weakness was released 10/29/2018 by Martin Albrecht, Jake Massimo, Kenny Paterson and Juraj Somorovsky with Google Project Zero as HT209192 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2018-4398 since 01/02/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/03/2023). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

An issue existed in the method for determining prime numbers. This issue was addressed by using pseudorandom bases for testing of primes.

The vulnerability scanner Nessus provides a plugin with the ID 118573 (macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-005)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371294 (Apple iTunes for Windows Prior to 12.9.1 Multiple Vulnerabilities (HT209197)).

Upgrading to version 12.1 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 (118573) and SecurityFocus (BID 104232†). Entries connected to this vulnerability are available at VDB-117820, VDB-118107, VDB-121205 and VDB-126195. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Prime Number
Class: Input validation / Prime Number
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 118573
Nessus Name: macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-005)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

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 12.1

Timelineinfo

01/02/2018 🔍
05/21/2018 +139 days 🔍
10/29/2018 +161 days 🔍
10/29/2018 +0 days 🔍
10/30/2018 +0 days 🔍
10/31/2018 +1 days 🔍
10/31/2018 +0 days 🔍
06/03/2023 +1676 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT209192
Researcher: Martin Albrecht, Jake Massimo, Kenny Paterson, Juraj Somorovsky
Organization: Google Project Zero
Status: Confirmed

CVE: CVE-2018-4398 (🔍)
SecurityFocus: 104232 - Multiple CPU Hardware CVE-2018-3639 Information Disclosure Vulnerability

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

Entryinfo

Created: 10/31/2018 09:07 AM
Updated: 06/03/2023 02:53 PM
Changes: 10/31/2018 09:07 AM (72), 04/08/2020 06:57 AM (12), 06/03/2023 02:53 PM (4)
Complete: 🔍
Cache ID: 18:E43:40

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