Apple iOS up to 11.2.5 API Core Text Telugu Character Bomb resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Apple iOS up to 11.2.5 and classified as critical. Impacted is an unknown function of the component API Core Text. This manipulation as part of Telugu Character causes resource consumption (Bomb). This vulnerability is registered as CVE-2018-4100. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Apple iOS up to 11.2.5 (Smartphone Operating System) and classified as critical. Affected by this vulnerability is an unknown part of the component API Core Text. The manipulation as part of a Telugu Character leads to a resource consumption vulnerability (Bomb). The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability.

The bug was discovered 01/23/2018. The weakness was published 02/14/2018 as confirmed article (Website). The advisory is shared at mobileworld.it. The public release happened without involvement of Apple. This vulnerability is known as CVE-2018-4100 since 01/02/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at mobileworld.it. It is declared as highly functional. We expect the 0-day to have been worth approximately $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 11.3 Beta 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 Tenable (106297) and SecurityFocus (BID 102057†). Additional details are provided at theverge.com. Similar entries are available at VDB-110054, VDB-111325, VDB-112574 and VDB-112575. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.3info

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Name: Bomb
Class: Resource consumption / Bomb
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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 Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: iOS 11.3 Beta

Timelineinfo

11/29/2017 🔍
01/02/2018 +34 days 🔍
01/23/2018 +21 days 🔍
01/23/2018 +0 days 🔍
01/24/2018 +1 days 🔍
02/14/2018 +21 days 🔍
02/14/2018 +0 days 🔍
02/15/2018 +1 days 🔍
04/03/2018 +47 days 🔍
02/03/2021 +1037 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: mobileworld.it
Researcher: Adam Mariš
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-4100 (🔍)
GCVE (CVE): GCVE-0-2018-4100
GCVE (VulDB): GCVE-100-113305
SecurityFocus: 102057 - cURL/libcURL CVE-2017-8817 Memory Corruption Vulnerability
SecurityTracker: 1040265

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

Entryinfo

Created: 02/15/2018 15:56
Updated: 02/03/2021 16:44
Changes: 02/15/2018 15:56 (77), 01/07/2020 08:53 (15), 02/03/2021 16:42 (3), 02/03/2021 16:44 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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