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lundi 29 octobre 2018

Apple macOS up to 10.14.0 CoreCrypto Prime Number weak encryption

A vulnerability classified as critical was found in Apple macOS up to 10.14.0. This vulnerability affects an unknown function of the component CoreCrypto. The manipulation with an unknown input leads to a weak encryption vulnerability (Prime Number). The CWE definition for the vulnerability is CWE-311. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 10/29/2018 by Juraj Somorovsky as HT209193 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2018-4398. The exploitation appears to be difficult. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/31/2018). It 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.

Upgrading to version 10.14.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Similar entries are available at 126166, 126196, 126212 and 126232.

CPE

CVSSv3

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.4

VulDB Base Score: ≈4.6
VulDB Temp Score: ≈4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2

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

Exploiting

Class: Weak encryption / Prime Number (CWE-311)
Local: Yes
Remote: No

Availability: No

Price Prediction: 🔍
Current Price Estimation: 🔒

Threat Intelligence

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Actions: 🔍

Countermeasures

Recommended: Upgrade
Status: Official fix
Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Upgrade: macOS 10.14.1

Timeline

10/29/2018 Advisory disclosed
10/29/2018 Countermeasure disclosed
10/31/2018 VulDB entry created
10/31/2018 VulDB last update

Sources

Advisory: HT209193
Researcher: Juraj Somorovsky
Status: Confirmed

CVE: CVE-2018-4398 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔒

Entry

Created: 10/31/2018
Complete: 🔍

Lien vers l'article source

Auteur: VulDB

Catégories: VulDBNombre de vues: 153

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