Apple iOS up to 9.3.4 Kernel Trident Pegasus information disclosure

CVSS Meta Temp Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Apple iOS up to 9.3.4. The impacted element is an unknown function of the component Kernel. Such manipulation leads to information disclosure (Trident Pegasus). This vulnerability is traded as CVE-2016-4655. An attack has to be approached locally. Furthermore, there is an exploit available. A worm is actively spreading and exploiting this vulnerability automatically. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple iOS up to 9.3.4 (Smartphone Operating System). It has been rated as problematic. Affected by this issue is an unknown function of the component Kernel. The manipulation with an unknown input leads to a information disclosure vulnerability (Trident Pegasus). Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

The kernel in Apple iOS before 9.3.5 allows attackers to obtain sensitive information from memory via a crafted app.

The bug was discovered 08/25/2016. The weakness was shared 08/25/2016 with Citizen Lab/Lookout as HT207107 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. The vendor cooperated in the coordination of the public release. This vulnerability is handled as CVE-2016-4655 since 05/11/2016. The attack needs to be approached locally. The successful exploitation requires a simple authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1592. The advisory points out:

A validation issue was addressed through improved input sanitization.

The exploit is available at exploit-db.com. It is declared as attacked. As 0-day the estimated underground price was around $5k-$25k. A worm is spreading, which is automatically exploiting this vulnerability. The vulnerability scanner Nessus provides a plugin with the ID 93317 (Mac OS X Multiple Vulnerabilities (Security Updates 2016-001 / 2016-005)), 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 370127 (Apple Mac OS X Security Update El Capitan 2016-001 and Yosemite 2016-005 Not Installed (APPLE-SA-2016-09-01-2)). The advisory illustrates:

Trident is used in a spyware product called Pegasus, which according to an investigation by Citizen Lab, is developed by an organization called NSO Group. NSO Group is an Israeli-based organization that was acquired by U.S. company Francisco Partners Management in 2010, and according to news reports specializes in “cyber war.” Pegasus is highly advanced in its use of zero-days, obfuscation, encryption, and kernel-level exploitation.
This issue was added on 05/24/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 06/14/2022:
Apply updates per vendor instructions.

Upgrading to version 9.3.5 or 10.0.1 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 (44836), Zero-Day.cz (270), Tenable (93317), SecurityFocus (BID 92651†) and SecurityTracker (ID 1036694†). blog.lookout.com is providing further details. The entries VDB-90945 and VDB-90946 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Name: Trident Pegasus
Class: Information disclosure / Trident Pegasus
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Wormified: 🔍
Download: 🔍

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93317
Nessus Name: Mac OS X Multiple Vulnerabilities (Security Updates 2016-001 / 2016-005)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: webkit_trident.rb
MetaSploit Name: WebKit not_number defineProperties UAF
MetaSploit File: 🔍

Exploit-DB: 🔍
Zero-Day.cz: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS 9.3.5/10.0.1

Timelineinfo

05/11/2016 🔍
08/25/2016 +106 days 🔍
08/25/2016 +0 days 🔍
08/25/2016 +0 days 🔍
08/25/2016 +0 days 🔍
08/25/2016 +0 days 🔍
08/25/2016 +0 days 🔍
08/26/2016 +1 days 🔍
09/02/2016 +7 days 🔍
09/13/2016 +11 days 🔍
01/29/2025 +3060 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207107
Organization: Citizen Lab/Lookout
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-4655 (🔍)
GCVE (CVE): GCVE-0-2016-4655
GCVE (VulDB): GCVE-100-90944
SecurityFocus: 92651 - Apple iOS CVE-2016-4655 Information Disclosure Vulnerability
SecurityTracker: 1036694

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

Entryinfo

Created: 08/26/2016 08:42
Updated: 01/29/2025 19:43
Changes: 08/26/2016 08:42 (99), 07/24/2019 13:03 (2), 04/26/2024 11:22 (25), 07/03/2024 00:47 (1), 07/07/2024 13:59 (2), 09/09/2024 22:30 (1), 01/29/2025 19:43 (11)
Complete: 🔍
Cache ID: 216:CFA:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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