Apple iOS/iPadOS up to 14.7 IOMobileFrameBuffer memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Apple iOS and iPadOS up to 14.7. Affected by this vulnerability is an unknown functionality of the component IOMobileFrameBuffer. Executing a manipulation can lead to memory corruption. The identification of this vulnerability is CVE-2021-30807. The attack can only be executed locally. Furthermore, there is an exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple iOS and iPadOS up to 14.7 (Smartphone Operating System). It has been declared as critical. This vulnerability affects an unknown code block of the component IOMobileFrameBuffer. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

The weakness was shared 07/26/2021 as HT212623 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2021-30807. Technical details are unknown but a public exploit is available. The advisory points out:

An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

A public exploit has been developed by Saar Amar in Objective-C and been published immediately after the advisory. It is possible to download the exploit at saaramar.github.io. It is declared as attacked. As 0-day the estimated underground price was around $25k-$100k. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 11/17/2021:

Apply updates per vendor instructions.

Upgrading to version 14.7.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A memory corruption issue was addressed with improved memory handling.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (654). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.7

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Author: Saar Amar
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Zero-Day.cz: 🔍

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 14.7.1

Timelineinfo

04/13/2021 🔍
07/26/2021 +104 days 🔍
07/26/2021 +0 days 🔍
07/26/2021 +0 days 🔍
07/27/2021 +1 days 🔍
01/30/2025 +1283 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212623
Status: Confirmed

CVE: CVE-2021-30807 (🔍)
GCVE (CVE): GCVE-0-2021-30807
GCVE (VulDB): GCVE-100-179674
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 07/27/2021 07:52
Updated: 01/30/2025 02:49
Changes: 07/27/2021 07:52 (18), 07/27/2021 07:56 (30), 07/27/2021 08:05 (5), 07/27/2021 08:06 (2), 08/05/2021 09:09 (1), 04/21/2024 17:22 (23), 06/25/2024 16:55 (2), 09/14/2024 12:24 (1), 01/30/2025 02:49 (28)
Complete: 🔍
Committer: misc
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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