Apple iOS up to 12.4.1 Quick Look default permission

CVSS Meta Temp Score
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CTI Interest Score
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4.7$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Apple iOS up to 12.4.1. This affects an unknown part of the component Quick Look. Performing a manipulation results in default permission. This vulnerability was named CVE-2019-8731. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Apple iOS up to 12.4.1 (Smartphone Operating System). This affects an unknown functionality of the component Quick Look. The manipulation with an unknown input leads to a default permission vulnerability. CWE is classifying the issue as CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. This is going to have an impact on confidentiality. The summary by CVE is:

A permissions issue existed in which execute permission was incorrectly granted. This issue was addressed with improved permission validation. This issue is fixed in iOS 13. Processing a maliciously crafted file may disclose user information.

The weakness was presented 09/26/2019 by Saif Hamed Hamdan Al Hinai and Yiğit Can Yilmaz as HT210606 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is uniquely identified as CVE-2019-8731 since 02/18/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/09/2020). It is expected to see the exploit prices for this product increasing in the near future.MITRE ATT&CK project uses the attack technique T1222 for this issue. The advisory points out:

A permissions issue existed in which execute permission was incorrectly granted. This issue was addressed with improved permission validation.

Upgrading to version 13.0 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

See VDB-142348, VDB-142347, VDB-142349 and VDB-142350 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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: iOS 13.0

Timelineinfo

02/18/2019 🔍
09/19/2019 +213 days 🔍
09/26/2019 +7 days 🔍
09/27/2019 +1 days 🔍
09/09/2020 +348 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT210606
Researcher: Saif Hamed Hamdan Al Hinai, Yiğit Can Yilmaz
Status: Confirmed

CVE: CVE-2019-8731 (🔍)
GCVE (CVE): GCVE-0-2019-8731
GCVE (VulDB): GCVE-100-142353
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 09/27/2019 07:15
Updated: 09/09/2020 17:28
Changes: 09/27/2019 07:15 (64), 09/09/2020 17:28 (1)
Complete: 🔍
Cache ID: 216::103

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

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