Apple tvOS up to 10.2.0 WebKit input validation

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 tvOS up to 10.2.0 and classified as critical. This affects an unknown function of the component WebKit. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2017-2505. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Apple tvOS up to 10.2.0 (Digital Media Player). This affects an unknown part of the component WebKit. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 05/10/2017. The weakness was disclosed 05/15/2017 by Kai Kang (lokihardt) with Google Project Zero as HT207801 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2017-2505 since 12/01/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. 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 $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 100355 (macOS : Apple Safari < 10.1.1 Multiple Vulnerabilities), 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 371242 (Apple Safari 10.1.1 Not Installed (APPLE-SA-2017-05-15-7)).

Upgrading to version 10.2.1 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 Tenable (100355) and SecurityFocus (BID 98473†). The entries VDB-101294, VDB-101254, VDB-101262 and VDB-101263 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality 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: 7.4

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: Input validation
CWE: CWE-20
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: 100355
Nessus Name: macOS : Apple Safari < 10.1.1 Multiple Vulnerabilities
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: tvOS 10.2.1

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 +5 days 🔍
05/23/2017 +1 days 🔍
12/24/2020 +1311 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207801
Researcher: Kai Kang (lokihardt)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2505 (🔍)
GCVE (CVE): GCVE-0-2017-2505
GCVE (VulDB): GCVE-100-101307
SecurityFocus: 98473 - Webkit Cross Site Scripting and Arbitrary Code Execution Vulnerabilities
OSVDB: - CVE-2017-2505 - Apple - Multiple Products - Memory Corruption Issue
SecurityTracker: 1038487

See also: 🔍

Entryinfo

Created: 05/16/2017 09:04
Updated: 12/24/2020 06:20
Changes: 05/16/2017 09:04 (79), 09/27/2020 12:56 (8), 12/24/2020 06:20 (4)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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