2021-30792 | Apple iOS/iPadOS Model I/O out-of-bounds write (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, which was classified as critical, has been found in Apple iOS and iPadOS up to 14.6 (Smartphone Operating System). This issue affects some unknown processing of the component Model I/O. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-787. Impacted is confidentiality, integrity, and availability.
The weakness was disclosed 07/19/2021 as HT212601 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2021-30792 since 04/13/2021. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $25k-$100k 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. The advisory points out:
Processing a maliciously crafted image may lead to arbitrary code execution
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:
An out-of-bounds write was addressed with improved input validation.
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: 🔍
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Memory corruption
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/
CVE: CVE-2021-30792 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20150917
Created: 07/23/2021 08:24
Updated: 07/27/2021 19:41
Changes: (1) source_cve_assigned
Download the whitepaper to learn more about our service!