| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.3 | $0-$5k | 0.00 |
Summary
A vulnerability, which was classified as problematic, was found in Apple iOS up to 11.3.1. This affects an unknown function of the component Contacts. The manipulation results in resource management. This vulnerability is cataloged as CVE-2018-4100. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.
Details
A vulnerability classified as problematic has been found in Apple iOS up to 11.3.1 (Smartphone Operating System). Affected is some unknown functionality of the component Contacts. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability.
The bug was discovered 01/23/2018. The weakness was shared 05/29/2018 as HT208848 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is traded as CVE-2018-4100 since 01/02/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The advisory points out:
A validation issue existed in the handling of phone numbers. This issue was addressed with improved validation of phone numbers.
The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 106297 (macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-001) (Meltdown)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370738 (Apple macOS High Sierra 10.13.3, Security Update 2018-001 Sierra, and Security Update 2018-001 El Capitan Not Installed (Meltdown)).
Upgrading to version 11.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at Tenable (106297) and SecurityFocus (BID 102772†). The entries VDB-110054, VDB-111325, VDB-112574 and VDB-112575 are related to this item. Once again VulDB remains the best 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: 6.4VulDB Meta Temp Score: 6.3
VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
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 |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Resource managementCWE: CWE-399 / CWE-404
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 |
Nessus ID: 106297
Nessus Name: macOS and Mac OS X Multiple Vulnerabilities (Security Update 2018-001) (Meltdown)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 881448
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-03 (HT208465)
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Upgrade: iOS 11.4
Timeline
01/02/2018 🔍01/23/2018 🔍
01/23/2018 🔍
01/24/2018 🔍
04/03/2018 🔍
05/29/2018 🔍
05/29/2018 🔍
06/03/2018 🔍
03/20/2023 🔍
Sources
Vendor: apple.comAdvisory: HT208848
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2018-4100 (🔍)
GCVE (CVE): GCVE-0-2018-4100
GCVE (VulDB): GCVE-100-118764
SecurityFocus: 102772 - Apple iOS/WatchOS/macOS CVE-2018-4100 Denial of Service Vulnerability
SecurityTracker: 1040265
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍
Entry
Created: 06/03/2018 14:54Updated: 03/20/2023 22:00
Changes: 06/03/2018 14:54 (79), 02/12/2020 19:50 (5), 03/20/2023 22:00 (5)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.

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