Apple GarageBand up to 10.4.7 MIDI File Parser out-of-bounds

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Apple GarageBand up to 10.4.7. The affected element is an unknown function of the component MIDI File Parser. This manipulation causes out-of-bounds. This vulnerability is handled as CVE-2023-27938. It is possible to launch the attack on the local host. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Apple GarageBand up to 10.4.7. Affected by this vulnerability is some unknown processing of the component MIDI File Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 03/07/2023 by Mickey Jin as HT213650 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2023-27938. Neither technical details nor an exploit are publicly available. The advisory points out:

Parsing a maliciously crafted MIDI file may lead to an unexpected application termination or arbitrary code execution

Upgrading to version 10.4.8 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An out-of-bounds read issue was addressed with improved input validation.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-31664). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Apple

Name

GarageBand

Version

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

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

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: GarageBand 10.4.8

Timelineinfo

03/07/2023 🔍
03/07/2023 +0 days 🔍
03/08/2023 +1 days 🔍
03/29/2023 +21 days 🔍
11/29/2025 +976 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213650
Researcher: Mickey Jin
Status: Confirmed

CVE: CVE-2023-27938 (🔍)
GCVE (CVE): GCVE-0-2023-27938
GCVE (VulDB): GCVE-100-224461
EUVD: 🔍

Entryinfo

Created: 03/29/2023 16:04
Updated: 11/29/2025 04:59
Changes: 03/29/2023 16:04 (18), 03/29/2023 16:07 (27), 04/19/2023 16:47 (1), 11/29/2025 04:59 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.