| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.4 | $5k-$25k | 0.00 |
Summary
A vulnerability described as problematic has been identified in Apple iOS and iPadOS up to 14.4.2. This affects an unknown function of the component Telephony. Executing a manipulation can lead to behavioral workflow. This vulnerability is tracked as CVE-2021-1854. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.
Details
A vulnerability classified as problematic was found in Apple iOS and iPadOS up to 14.4.2 (Smartphone Operating System). This vulnerability affects an unknown code block of the component Telephony. The manipulation with an unknown input leads to a behavioral workflow vulnerability. The CWE definition for the vulnerability is CWE-841. The product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was disclosed 04/26/2021 by Steven Thorne as HT212317 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2021-1854. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 04/30/2021). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:
A legacy cellular network can automatically answer an incoming call when an ongoing call ends or drops.
Upgrading to version 14.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:
A call termination issue with was addressed with improved logic.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.apple.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.6VulDB Meta Temp Score: 5.4
VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| 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: 🔍
Exploiting
Class: Behavioral workflowCWE: CWE-841 / CWE-840
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: iOS/iPadOS 14.5
Timeline
12/08/2020 🔍04/26/2021 🔍
04/26/2021 🔍
04/27/2021 🔍
04/30/2021 🔍
Sources
Vendor: apple.comAdvisory: HT212317
Researcher: Steven Thorne
Status: Confirmed
CVE: CVE-2021-1854 (🔍)
GCVE (CVE): GCVE-0-2021-1854
GCVE (VulDB): GCVE-100-173962
scip Labs: https://www.scip.ch/en/?labs.20150917
Entry
Created: 04/27/2021 08:22Updated: 04/30/2021 13:58
Changes: 04/27/2021 08:22 (14), 04/27/2021 08:23 (5), 04/27/2021 08:26 (28), 04/30/2021 13:58 (4)
Complete: 🔍
Cache ID: 216::103
If you want to get best quality of vulnerability data, you may have to visit VulDB.
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