Apple Safari up to 10.1.0 WebKit memory corruption

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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Apple Safari up to 10.1.0. Impacted is an unknown function of the component WebKit. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2017-6984. The attack may be performed from remote. In addition, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Safari up to 10.1.0 (Web Browser). It has been rated as critical. Affected by this issue is some unknown functionality of the component WebKit. 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 05/15/2017. The weakness was presented 05/15/2017 by lokihardt with Google Project Zero as HT207804 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2017-6984 since 03/17/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. 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. 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. 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 10.1.1 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†). See VDB-101294, VDB-101254, VDB-101262 and VDB-101263 for similar entries. Once again VulDB remains the best 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: Safari 10.1.1

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: HT207804
Researcher: lokihardt (lokihardt)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6984 (🔍)
GCVE (CVE): GCVE-0-2017-6984
GCVE (VulDB): GCVE-100-101348
SecurityFocus: 98454 - WebKit CVE-2017-6984 Unspecified Memory Corruption Vulnerability
SecurityTracker: 1038487

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 05/16/2017 09:17
Updated: 08/24/2024 13:35
Changes: 05/16/2017 09:17 (86), 10/18/2019 21:35 (6), 12/24/2020 09:38 (3), 12/24/2020 09:40 (1), 08/24/2024 13:35 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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