WebKit JavaScriptCore MacroAssemblerARM64.h operatorString out-of-bounds

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9$0-$5k0.00

A vulnerability, which was classified as problematic, was found in WebKit (Web Browser) (the affected version unknown). This affects the function operatorString of the file assembler/MacroAssemblerARM64.h of the component JavaScriptCore. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The software reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. The summary by CVE is:

JavaScriptCore in WebKit, as distributed in Safari Technology Preview Release 18, allows remote attackers to cause a denial of service (bitfield out-of-bounds read and application crash) via crafted JavaScript code that is mishandled in the operatorString function, related to assembler/MacroAssemblerARM64.h, assembler/MacroAssemblerX86Common.h, and wasm/WasmB3IRGenerator.cpp.

The bug was discovered 04/01/2017. The weakness was disclosed 04/03/2017 (Website). The advisory is shared at bugs.webkit.org. This vulnerability is uniquely identified as CVE-2016-10226 since 02/17/2017. 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. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entry 99236 is pretty similar.

Productinfo

Type

Name

License

  • open-source

CPE 2.3info

CPE 2.2info

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Out-of-bounds
CWE: CWE-125 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/17/2017 🔍
04/01/2017 +43 days 🔍
04/03/2017 +2 days 🔍
04/03/2017 +0 days 🔍
04/03/2017 +0 days 🔍
11/24/2022 +2061 days 🔍

Sourcesinfo

Advisory: 209295
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-10226 (🔍)
OSVDB: - CVE-2016-10226 - WebKit - Out-of-Bounds Read Issue

See also: 🔍

Entryinfo

Created: 04/03/2017 04:55 PM
Updated: 11/24/2022 05:34 PM
Changes: 04/03/2017 04:55 PM (58), 08/25/2020 11:27 AM (3), 11/24/2022 05:34 PM (3)
Complete: 🔍

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