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$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Apple iOS up to 10.3.1. The affected element is an unknown function of the component WebKit. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2017-2496. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Apple iOS up to 10.3.1 (Smartphone Operating System) and classified as critical. This vulnerability affects an unknown part 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 05/10/2017. The weakness was disclosed 05/15/2017 by Richard Zhu (lokihardt) with Apple as HT207798 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2017-2496 since 12/01/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 12/23/2020). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

Multiple memory corruption issues were addressed with improved memory handling.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 100826 (Fedora 24 : webkitgtk4 (2017-d39099ea6a)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. 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)).

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 Tenable (100826) and SecurityFocus (BID 98474†). The entries VDB-101294, VDB-101254, VDB-101255 and VDB-101256 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 100826
Nessus Name: Fedora 24 : webkitgtk4 (2017-d39099ea6a)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802925
OpenVAS Name: Apple Safari Multiple Vulnerabilities-HT207804
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS 10.3.2

Timelineinfo

12/01/2016 🔍
05/10/2017 +160 days 🔍
05/15/2017 +5 days 🔍
05/15/2017 +0 days 🔍
05/15/2017 +0 days 🔍
05/16/2017 +1 days 🔍
05/22/2017 +6 days 🔍
06/16/2017 +25 days 🔍
12/23/2020 +1286 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207798
Researcher: Richard Zhu (lokihardt)
Organization: Apple
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2496 (🔍)
GCVE (CVE): GCVE-0-2017-2496
GCVE (VulDB): GCVE-100-101272
SecurityFocus: 98474 - Apple iOS and Safari Multiple Security Vulnerabilities
OSVDB: - CVE-2017-2496 - Apple - Multiple Products - Memory Corruption Issue
SecurityTracker: 1038487

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

Entryinfo

Created: 05/16/2017 04:20
Updated: 12/23/2020 16:29
Changes: 05/16/2017 04:20 (71), 09/27/2020 09:13 (17), 12/23/2020 16:29 (3)
Complete: 🔍
Cache ID: 216::103

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