Apple iOS/iPadOS up to 13.1.3 Kernel Memory input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

A vulnerability was found in Apple iOS and iPadOS up to 13.1.3 (Smartphone Operating System). It has been declared as problematic. This vulnerability affects some unknown functionality of the component Kernel. The manipulation with an unknown input leads to a input validation vulnerability (Memory). The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality. CVE summarizes:

A validation issue was addressed with improved input sanitization. This issue is fixed in iOS 13.2 and iPadOS 13.2, macOS Catalina 10.15.1, tvOS 13.2, watchOS 6.1. An application may be able to read restricted memory.

The weakness was presented 10/28/2019 by 08Tc3wBB as HT210721 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2019-8794. Local access is required to approach this attack. A single authentication is required for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A validation issue was addressed with improved input sanitization.

A public exploit has been developed by 08Tc3wBB in Objective-C and been published 2 weeks after the advisory. It is possible to download the exploit at github.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

Upgrading to version 13.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

See 144512, 144528, 144529 and 144530 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Memory
Class: Input validation / Memory
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: 08Tc3wBB
Programming Language: 🔍
Download: 🔍

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: 🔍

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

Upgrade: iOS/iPadOS 13.2

Timelineinfo

02/18/2019 🔍
10/28/2019 +252 days 🔍
10/28/2019 +0 days 🔍
10/31/2019 +3 days 🔍
11/11/2019 +11 days 🔍
01/31/2024 +1542 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT210721
Researcher: 08Tc3wBB
Status: Confirmed

CVE: CVE-2019-8794 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 10/31/2019 07:38
Updated: 01/31/2024 08:28
Changes: 10/31/2019 07:38 (47), 11/12/2019 07:29 (21), 11/12/2019 07:30 (2), 01/31/2024 08:28 (7)
Complete: 🔍
Committer: misc

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