| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.8 | $0-$5k | 0.00 |
Summary
A vulnerability classified as problematic has been found in Apple iOS and iPadOS up to 14.8. This affects an unknown part of the component Telephony. The manipulation leads to cryptographic issue. This vulnerability is traded as CVE-2021-30826. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.
Details
A vulnerability was found in Apple iOS and iPadOS up to 14.8 (Smartphone Operating System) and classified as problematic. This issue affects some unknown processing of the component Telephony. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability.
The weakness was shared 09/20/2021 by CheolJun Park, Sangwook Bae and BeomSeok Oh as HT212814 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2021-30826. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/21/2021). It is expected to see the exploit prices for this product increasing in the near future.The attack technique deployed by this issue is T1600 according to MITRE ATT&CK. The advisory points out:
In certain situations, the baseband would fail to enable integrity and ciphering protection
Upgrading to version 15.0 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:
A logic issue was addressed with improved state management.
Be aware that VulDB is the high quality source for vulnerability data.
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: 5.0VulDB Meta Temp Score: 4.8
VulDB Base Score: 5.0
VulDB Temp Score: 4.8
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: Cryptographic issueCWE: CWE-310
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 15.0
Timeline
04/13/2021 🔍09/20/2021 🔍
09/20/2021 🔍
09/21/2021 🔍
09/30/2021 🔍
Sources
Vendor: apple.comAdvisory: HT212814
Researcher: CheolJun Park, Sangwook Bae, BeomSeok Oh
Status: Confirmed
CVE: CVE-2021-30826 (🔍)
GCVE (CVE): GCVE-0-2021-30826
GCVE (VulDB): GCVE-100-183119
scip Labs: https://www.scip.ch/en/?labs.20150917
Entry
Created: 09/21/2021 11:41Updated: 09/30/2021 16:03
Changes: 09/21/2021 11:41 (8), 09/21/2021 11:42 (10), 09/21/2021 11:45 (29), 09/30/2021 16:03 (1)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.

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