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2.4
LOW CVSS 3.1
CVE-2021-30956
Apple iOS Contact Leak on Locked Device
Description

A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management. This issue is fixed in iOS 15.2 and iPadOS 15.2. An attacker with physical access to a device may be able to see private contact information.

INFO

Published Date :

Aug. 24, 2021, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 6:05 a.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2021-30956 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apple iphone_os
2 Apple ipados
: Total Affected Vendor : 1 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 LOW [email protected]
CVSS 3.1 LOW [email protected]
Solution
This information is provided by the 3rd party feeds.
  • Upgrade to Apple iOS version 15.2 or later
Public PoC/Exploit Available at Github

CVE-2021-30956 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-30956.

URL Resource
https://support.apple.com/en-us/HT212976
https://support.apple.com/en-us/HT212976
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-30956 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-30956 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
plzheheplztrying/cve_monitor

None

HTML Python Shell

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 13, 2025, 8:50 a.m. This repo has been linked 891 different CVEs too.
Profile Photo
NaInSec/CVE-PoC-in-GitHub

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 2 months, 3 weeks ago
12 stars 3 fork 3 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 931 different CVEs too.
Profile Photo
zecool/cve

None

Updated: 2 months ago
2 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 935 different CVEs too.
Profile Photo
WhooAmii/POC_to_review

None

Updated: 3 months ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 935 different CVEs too.
Profile Photo
fordsham/CVE-2021-30956

.

Updated: 4 months, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : June 1, 2022, 7:09 a.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-30956 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2021-30956 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://support.apple.com/en-us/HT212976
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Source Update by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Source MITRE Apple Inc.
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212976 [No types assigned]
    Removed Reference MITRE https://support.apple.com/en-us/HT212976
  • CPE Deprecation Remap by [email protected]

    Jan. 09, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* versions from (excluding) 15.2 OR *cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* versions from (excluding) 15.2
  • CWE Remap by [email protected]

    Jul. 12, 2022

    Action Type Old Value New Value
    Changed CWE CWE-863 NVD-CWE-noinfo
  • Initial Analysis by [email protected]

    May. 27, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    Changed Reference Type https://support.apple.com/en-us/HT212976 No Types Assigned https://support.apple.com/en-us/HT212976 Vendor Advisory
    Added CWE NIST CWE-863
    Added CPE Configuration OR *cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* versions up to (excluding) 15.2 *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 15.2
  • CVE Modified by [email protected]

    May. 26, 2022

    Action Type Old Value New Value
    Changed Description ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by the CVE program. Notes: none. A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management. This issue is fixed in iOS 15.2 and iPadOS 15.2. An attacker with physical access to a device may be able to see private contact information.
    Added Reference https://support.apple.com/en-us/HT212976 [No Types Assigned]
  • CVE Unrejected by [email protected]

    May. 26, 2022

    Action Type Old Value New Value
  • CVE Rejected by [email protected]

    Aug. 24, 2021

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 2.4
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 2.1
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} -0.05%

score

0.20305

percentile