Apple tvOS up to 12.1.2 Kernel buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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9.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple tvOS up to 12.1.2. It has been declared as critical. The affected element is an unknown function of the component Kernel. Executing a manipulation can lead to buffer overflow. This vulnerability is tracked as CVE-2019-8527. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Apple tvOS up to 12.1.2 (Digital Media Player). This vulnerability affects some unknown processing of the component Kernel. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 03/25/2019. The weakness was disclosed 03/25/2019 by Jakub Wilk with Google as HT209601 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2019-8527 since 02/18/2019. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. 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 08/07/2023). The advisory points out:

A buffer overflow was addressed with improved size validation.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 371712 (Apple macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra Not Installed (APPLE-SA-2019-3-25-2)).

Upgrading to version 12.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 104423†). The entries VDB-119252, VDB-132233, VDB-132234 and VDB-132235 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.6
VulDB Meta Temp Score: 9.3

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: tvOS 12.2

Timelineinfo

06/07/2018 🔍
02/18/2019 +256 days 🔍
03/25/2019 +35 days 🔍
03/25/2019 +0 days 🔍
03/25/2019 +0 days 🔍
03/26/2019 +1 days 🔍
08/07/2023 +1595 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT209601
Researcher: Jakub Wilk
Organization: Google
Status: Confirmed

CVE: CVE-2019-8527 (🔍)
GCVE (CVE): GCVE-0-2019-8527
GCVE (VulDB): GCVE-100-132292
SecurityFocus: 104423 - Perl CVE-2018-12015 Directory Traversal Vulnerability

See also: 🔍

Entryinfo

Created: 03/26/2019 14:56
Updated: 08/07/2023 15:44
Changes: 03/26/2019 14:56 (65), 05/20/2020 16:17 (6), 08/07/2023 15:44 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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