Apple macOS up to 14.4 Keychain Item downgrade

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apple macOS up to 14.4. This impacts an unknown function of the component Keychain Item Handler. This manipulation causes downgrade. This vulnerability is tracked as CVE-2024-27837. The attack is restricted to local execution. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Apple macOS up to 14.4. Affected by this vulnerability is an unknown functionality of the component Keychain Item Handler. The manipulation with an unknown input leads to a downgrade vulnerability. The CWE definition for the vulnerability is CWE-757. A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties. As an impact it is known to affect confidentiality. The summary by CVE is:

A downgrade issue was addressed with additional code-signing restrictions. This issue is fixed in macOS Sonoma 14.5. A local attacker may gain access to Keychain items.

The advisory is shared at support.apple.com. This vulnerability is known as CVE-2024-27837 since 02/26/2024. The exploitation appears to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1562.010 for this issue.

Upgrading to version 14.5 eliminates this vulnerability.

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

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.3
NVD Vector: 🔍

CNA Base Score: 7.7
CNA Vector: 🔍

ADP CISA Base Score: 7.7
ADP CISA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Downgrade
CWE: CWE-757
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
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: 🔍

0-Day Time: 🔍

Upgrade: macOS 14.5

Timelineinfo

02/26/2024 🔍
05/14/2024 +77 days 🔍
05/14/2024 +0 days 🔍
04/03/2026 +689 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT214106
Status: Confirmed

CVE: CVE-2024-27837 (🔍)
GCVE (CVE): GCVE-0-2024-27837
GCVE (VulDB): GCVE-100-264097
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 05/14/2024 04:36
Updated: 04/03/2026 17:32
Changes: 05/14/2024 04:36 (56), 12/10/2024 04:17 (22), 04/03/2026 17:32 (11)
Complete: 🔍
Cache ID: 216::103

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

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