Apple macOS prior 13.0 CoreCrypto denial of service

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 (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Apple macOS. This affects an unknown function of the component CoreCrypto. This manipulation causes denial of service. This vulnerability appears as CVE-2019-8741. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Apple macOS (Operating System) and classified as problematic. Affected by this vulnerability is an unknown code of the component CoreCrypto. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

A denial of service issue was addressed with improved input validation.

The weakness was presented 10/29/2019 by Nicky Mouha with NIST as HT210634 as confirmed security advisory (Website). It is possible to read the advisory at support.apple.com. The public release was coordinated in cooperation with Apple. This vulnerability is known as CVE-2019-8741 since 02/18/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK. The advisory points out:

Processing a large input may lead to a denial of service

Upgrading to version 13.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The security advisory contains the following remark:

A denial of service issue was addressed with improved input validation.

See VDB-150737, VDB-150761, VDB-150762 and VDB-150764 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: macOS 13.0

Timelineinfo

02/18/2019 🔍
10/29/2019 +253 days 🔍
10/29/2019 +0 days 🔍
03/01/2020 +124 days 🔍
03/01/2020 +0 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT210634
Researcher: Nicky Mouha
Organization: NIST
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2019-8741 (🔍)
GCVE (CVE): GCVE-0-2019-8741
GCVE (VulDB): GCVE-100-150763
scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 03/01/2020 13:28
Updated: 03/01/2020 13:33
Changes: 03/01/2020 13:28 (49), 03/01/2020 13:33 (19)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!