Apple iOS/iPadOS up to 14.5.1 Security memory corruption

EntryeditHistoryDiffjsonxmlCTI
CVSS Meta Temp Score
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CTI Interest Score
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6.0$25k-$100k0.08

A vulnerability classified as critical has been found in Apple iOS and iPadOS up to 14.5.1 (Smartphone Operating System). This affects an unknown code block of the component Security. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 05/24/2021 by xerub as HT212528 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2021-30737 since 04/13/2021. The exploitability is told to be easy. 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. 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 05/27/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Processing a maliciously crafted certificate may lead to arbitrary code execution

Upgrading to version 14.6 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 in the ASN.1 decoder was addressed by removing the vulnerable code.

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CVSSv3infoedit

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: 🔍

CVSSv2infoedit

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

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Upgrade: iOS/iPadOS 14.6

Timelineinfoedit

04/13/2021 CVE assigned
05/24/2021 +41 days Advisory disclosed
05/24/2021 +0 days Countermeasure disclosed
05/25/2021 +1 days VulDB entry created
05/27/2021 +2 days VulDB last update

Sourcesinfoedit

Vendor: https://www.apple.com/

Advisory: HT212528
Researcher: xerub
Status: Confirmed

CVE: CVE-2021-30737 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfoedit

Created: 05/25/2021 11:58 AM
Updated: 05/27/2021 07:11 PM
Changes: (4) source_cve_assigned vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_tempscore
Complete: 🔍

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