Apple iOS up to 11.2.4 Core Bluetooth memory corruption

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.
7.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple iOS up to 11.2.4 and classified as critical. The impacted element is an unknown function of the component Core Bluetooth. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2018-4087. Local access is required to approach this attack. Moreover, an exploit is present. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple iOS up to 11.2.4 (Smartphone Operating System). Affected by this issue is an unknown code of the component Core Bluetooth. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The bug was discovered 01/23/2018. The weakness was disclosed 01/26/2018 with Zimperium zLabs as HT208463 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2018-4087 since 01/02/2018. The attack needs to be approached locally. A simple authentication is needed for exploitation. Technical details are unknown but a public exploit is available. The advisory points out:

A memory corruption issue was addressed with improved memory handling.

A public exploit has been developed by Zimperium zLabs Team and been published 2 months after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k.

Upgrading to version 11.2.5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44215) and SecurityFocus (BID 102774†). The entries VDB-112574, VDB-112578, VDB-112579 and VDB-112580 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.8
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Zimperium zLabs Team
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: iOS 11.2.5

Timelineinfo

01/02/2018 🔍
01/23/2018 +21 days 🔍
01/23/2018 +0 days 🔍
01/23/2018 +0 days 🔍
01/26/2018 +3 days 🔍
01/28/2018 +2 days 🔍
02/28/2018 +31 days 🔍
02/28/2018 +0 days 🔍
04/03/2018 +34 days 🔍
12/29/2024 +2462 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT208463
Organization: Zimperium zLabs
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-4087 (🔍)
GCVE (CVE): GCVE-0-2018-4087
GCVE (VulDB): GCVE-100-112592
SecurityFocus: 102774 - Apple iOS/tvOS/watchOS Memory Corruption Vulnerabilities
SecurityTracker: 1040265

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 01/28/2018 18:59
Updated: 12/29/2024 01:48
Changes: 01/28/2018 18:59 (74), 01/14/2020 20:06 (5), 02/02/2021 09:05 (3), 12/29/2024 01:48 (15)
Complete: 🔍
Cache ID: 216:18F:103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!