Apple iOS up to 10.3.1 WebKit memory corruption

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

Summaryinfo

A vulnerability marked as critical has been reported in Apple iOS up to 10.3.1. Affected is an unknown function of the component WebKit. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2017-6984. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Apple iOS up to 10.3.1 (Smartphone Operating System). Affected by this vulnerability is an unknown code of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 05/15/2017. The weakness was disclosed 05/15/2017 by lokihardt with Google Project Zero as HT207798 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2017-6984 since 03/17/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The advisory points out:

Multiple memory corruption issues were addressed with improved memory handling.

A public exploit has been developed by Google Security Research in Javascript and been published 2 months after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 100256 (Apple TV < 10.2.1 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371242 (Apple Safari 10.1.1 Not Installed (APPLE-SA-2017-05-15-7)). The code used by the exploit is:

Object.prototype.__defineGetter__(1000, () => 2);
 
let locales = ['mr', 'bs', 'ee-TG', 'ms', 'kam-KE', 'mt', 'ha', 'es-HN', 'ml-IN', 'ro-MD', 'kab-DZ', 'he', 'es-CO', 'my', 'es-PA', 'az-Latn', 'mer', 'en-NZ', 'xog-UG', 'sg', 'fr-GP', 'sr-Cyrl-BA', 'hi', 'fil-PH', 'lt-LT', 'si', 'en-MT', 'si-LK', 'luo-KE', 'it-CH', 'teo', 'mfe', 'sk', 'uz-Cyrl-UZ', 'sl', 'rm-CH', 'az-Cyrl-AZ', 'fr-GQ', 'kde', 'sn', 'cgg-UG', 'so', 'fr-RW', 'es-SV', 'mas-TZ', 'en-MU', 'sq', 'hr', 'sr', 'en-PH', 'ca', 'hu', 'mk-MK', 'fr-TD', 'nb', 'sv', 'kln-KE', 'sw', 'nd', 'sr-Latn', 'el-GR', 'hy', 'ne', 'el-CY', 'es-CR', 'fo-FO', 'pa-Arab-PK', 'seh', 'ar-YE', 'ja-JP', 'ur-PK', 'pa-Guru', 'gl-ES', 'zh-Hant-HK', 'ar-EG', 'nl', 'th-TH', 'es-PE', 'fr-KM', 'nn', 'kk-Cyrl-KZ', 'kea', 'lv-LV', 'kln', 'tzm-Latn', 'yo', 'gsw-CH', 'ha-Latn-GH', 'is-IS', 'pt-BR', 'cs', 'en-PK', 'fa-IR', 'zh-Hans-SG', 'luo', 'ta', 'fr-TG', 'kde-TZ', 'mr-IN', 'ar-SA', 'ka-GE', 'mfe-MU', 'id', 'fr-LU', 'de-LU', 'ru-MD', 'cy', 'zh-Hans-HK', 'te', 'bg-BG', 'shi-Latn', 'ig', 'ses', 'ii', 'es-BO', 'th', 'ko-KR', 'ti', 'it-IT', 'shi-Latn-MA', 'pt-MZ', 'ff-SN', 'haw', 'zh-Hans', 'so-KE', 'bn-IN', 'en-UM', 'to', 'id-ID', 'uz-Cyrl', 'en-GU', 'es-EC', 'en-US-posix', 'sr-Latn-BA', 'is', 'luy', 'tr', 'en-NA', 'it', 'da', 'bo-IN', 'vun-TZ', 'ar-SD', 'uz-Latn-UZ', 'az-Latn-AZ', 'de', 'es-GQ', 'ta-IN', 'de-DE', 'fr-FR', 'rof-TZ', 'ar-LY', 'en-BW', 'asa', 'zh', 'ha-Latn', 'fr-NE', 'es-MX', 'bem-ZM', 'zh-Hans-CN', 'bn-BD', 'pt-GW', 'om', 'jmc', 'de-AT', 'kk-Cyrl', 'sw-TZ', 'ar-OM', 'et-EE', 'or', 'da-DK', 'ro-RO', 'zh-Hant', 'bm-ML', 'ja', 'fr-CA', 'naq', 'zu', 'en-IE', 'ar-MA', 'es-GT', 'uz-Arab-AF', 'en-AS', 'bs-BA', 'am-ET', 'ar-TN', 'haw-US', 'ar-JO', 'fa-AF', 'uz-Latn', 'en-BZ', 'nyn-UG', 'ebu-KE', 'te-IN', 'cy-GB', 'uk', 'nyn', 'en-JM', 'en-US', 'fil', 'ar-KW', 'af-ZA', 'en-CA', 'fr-DJ', 'ti-ER', 'ig-NG', 'en-AU', 'ur', 'fr-MC', 'pt-PT', 'pa', 'es-419', 'fr-CD', 'en-SG', 'bo-CN', 'kn-IN', 'sr-Cyrl-RS', 'lg-UG', 'gu-IN', 'ee', 'nd-ZW', 'bem', 'uz', 'sw-KE', 'sq-AL', 'hr-HR', 'mas-KE', 'el', 'ti-ET', 'es-AR', 'pl', 'en', 'eo', 'shi', 'kok', 'fr-CF', 'fr-RE', 'mas', 'rof', 'ru-UA', 'yo-NG', 'dav-KE', 'gv-GB', 'pa-Arab', 'es', 'teo-UG', 'ps', 'es-PR', 'fr-MF', 'et', 'pt', 'eu', 'ka', 'rwk-TZ', 'nb-NO', 'fr-CG'];
Intl.getCanonicalLocales(locales);

Upgrading to version 10.3.2 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 Exploit-DB (42191), Tenable (100256) and SecurityFocus (BID 98454†). The entries VDB-101294, VDB-101254, VDB-101255 and VDB-101256 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Google Security Research
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 100256
Nessus Name: Apple TV < 10.2.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800804
OpenVAS Name: Apple iTunes Code Execution Vulnerability-HT207805 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Upgrade: iOS 10.3.2

Timelineinfo

03/17/2017 🔍
05/15/2017 +59 days 🔍
05/15/2017 +0 days 🔍
05/15/2017 +0 days 🔍
05/15/2017 +0 days 🔍
05/16/2017 +1 days 🔍
05/17/2017 +1 days 🔍
05/22/2017 +5 days 🔍
06/16/2017 +25 days 🔍
06/16/2017 +0 days 🔍
08/24/2024 +2626 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207798
Researcher: lokihardt (lokihardt)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6984 (🔍)
GCVE (CVE): GCVE-0-2017-6984
GCVE (VulDB): GCVE-100-101287
SecurityFocus: 98454 - WebKit CVE-2017-6984 Unspecified Memory Corruption Vulnerability
SecurityTracker: 1038487

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

Entryinfo

Created: 05/16/2017 04:22
Updated: 08/24/2024 12:15
Changes: 05/16/2017 04:22 (87), 10/18/2019 21:47 (6), 12/23/2020 17:54 (3), 12/23/2020 17:59 (1), 08/24/2024 12:15 (17)
Complete: 🔍
Cache ID: 216:CA5:103

Be aware that VulDB is the high quality source for vulnerability data.

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