2021-30796 | Apple iOS/iPadOS Model I/O denial of service (HT212601)
|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.
A vulnerability classified as problematic was found in Apple iOS and iPadOS up to 14.6 (Smartphone Operating System). This vulnerability affects an unknown code block of the component Model I/O. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. As an impact it is known to affect availability.
The weakness was released 07/19/2021 by Mickey Jin as HT212601 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2021-30796 since 04/13/2021. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/27/2021). It is expected to see the exploit prices for this product increasing in the near future.This vulnerability is assigned to T1499 by the MITRE ATT&CK project. The advisory points out:
Processing a maliciously crafted image may lead to a denial of service
Upgrading to version 14.7 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:
A logic issue was addressed with improved validation.
VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Denial of service
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Upgrade
Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒
Upgrade: iOS/iPadOS 14.7
04/13/2021 CVE assigned
07/19/2021 +97 days Advisory disclosed
07/19/2021 +0 days Countermeasure disclosed
07/23/2021 +4 days VulDB entry created
07/27/2021 +4 days VulDB last updateVendor: https://www.apple.com/
Researcher: Mickey Jin
CVE: CVE-2021-30796 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20150917
Created: 07/23/2021 08:23
Updated: 07/27/2021 19:33
Changes: (1) source_cve_assigned
Enable the mail alert feature now!