Apple iOS/iPadOS Font Remote Code Execution

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.
6.0$5k-$25k0.03

A vulnerability was found in Apple iOS and iPadOS (Smartphone Operating System) (affected version unknown). It has been classified as critical. This affects an unknown functionality of the component Font Handler. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The issue was addressed with improved handling of caches. This issue is fixed in macOS Ventura 13.2, iOS 15.7.8 and iPadOS 15.7.8, watchOS 9.3, tvOS 16.3, iOS 16.3 and iPadOS 16.3, macOS Big Sur 11.7.9, macOS Monterey 12.6.8. Processing a font file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.1.

The weakness was published 09/12/2023. It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2023-41990 since 09/06/2023. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/12/2023). It is expected to see the exploit prices for this product increasing in the near future.

It is declared as highly functional.

Upgrading eliminates this vulnerability.

Productinfo

Type

Vendor

Name

License

  • commercial

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Highly functional

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: 🔒

Timelineinfo

09/06/2023 CVE reserved
09/12/2023 +6 days Advisory disclosed
09/12/2023 +0 days VulDB entry created
09/12/2023 +0 days VulDB last update

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2023-41990 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 09/12/2023 07:23 AM
Changes: 09/12/2023 07:23 AM (40)
Complete: 🔍

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