VDB-172288 · CVE-2021-1757 · GCVE-0-2021-1757

Apple iOS/iPadOS IOSkywalkFamily out-of-bounds

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Apple iOS and iPadOS and classified as problematic. The affected element is an unknown function of the component IOSkywalkFamily. Executing a manipulation can lead to out-of-bounds. This vulnerability appears as CVE-2021-1757. The attack requires local access. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Apple iOS and iPadOS (Smartphone Operating System) (the affected version is unknown). This vulnerability affects an unknown code of the component IOSkywalkFamily. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 02/01/2021 by Pan ZhenPeng as confirmed advisory (Website). This vulnerability was named CVE-2021-1757 since 12/08/2020. The exploitation appears to be easy. The attack needs to be approached locally. A single authentication is needed for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Smartphone Operating System

Vendor

Apple

Name

License

commercial

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

12/08/2020 🔍
02/01/2021 +55 days 🔍
02/01/2021 +0 days 🔍
04/03/2021 +61 days 🔍
04/09/2021 +6 days 🔍

Sourcesinfo

Vendor: apple.com

Researcher: Pan ZhenPeng
Status: Confirmed

CVE: CVE-2021-1757 (🔍)
GCVE (CVE): GCVE-0-2021-1757
GCVE (VulDB): GCVE-100-172288
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 04/03/2021 11:47
Updated: 04/09/2021 09:21
Changes: 04/03/2021 11:47 (33), 04/09/2021 09:21 (10)
Complete: 🔍
Cache ID: 216::103