Apple iOS up to 10.2 WebKit constructJSReadableStreamDefaultReader 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, which was classified as critical, was found in Apple iOS up to 10.2. The affected element is the function constructJSReadableStreamDefaultReader of the component WebKit. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2017-2457. The attack can be executed remotely. Additionally, an exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple iOS up to 10.2 (Smartphone Operating System). Affected by this issue is the function constructJSReadableStreamDefaultReader of the component WebKit. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The bug was discovered 03/27/2017. The weakness was released 03/27/2017 by Lufeng Li (lokihardt) with Google Project Zero as HT207617 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability is handled as CVE-2017-2457 since 12/01/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details as well as a public exploit are known. The advisory points out:

Multiple memory corruption issues were addressed through improved memory handling.

After 2 weeks, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 99278 (Ubuntu 16.04 LTS / 16.10 : webkit2gtk vulnerabilities (USN-3257-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196754 (Ubuntu Security Notification for Webkit2gtk Vulnerabilities (USN-3257-1)). The code used by the exploit is:

let rs = new ReadableStream();
let cons = rs.getReader().constructor;
 
rs.getReader = 0x12345;
new cons(rs);

Upgrading to version 10.3 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 (41803), Tenable (99278) and SecurityFocus (BID 97147†). Entries connected to this vulnerability are available at VDB-98600, VDB-98595, VDB-98597 and VDB-98593. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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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
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 99278
Nessus Name: Ubuntu 16.04 LTS / 16.10 : webkit2gtk vulnerabilities (USN-3257-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-HT207615
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS 10.3

Timelineinfo

12/01/2016 🔍
03/27/2017 +116 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/27/2017 +0 days 🔍
03/28/2017 +1 days 🔍
04/01/2017 +4 days 🔍
04/04/2017 +3 days 🔍
04/04/2017 +0 days 🔍
04/11/2017 +7 days 🔍
09/16/2024 +2715 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT207617
Researcher: Lufeng Li (lokihardt)
Organization: Google Project Zero
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-2457 (🔍)
GCVE (CVE): GCVE-0-2017-2457
GCVE (VulDB): GCVE-100-98786
SecurityFocus: 97147 - Apple macOS/iOS Multiple Security Vulnerabilities
OSVDB: - CVE-2017-2457 - Apple - Multiple Products - Memory Corruption Issue
SecurityTracker: 1038138

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

Entryinfo

Created: 03/28/2017 11:49
Updated: 09/16/2024 22:20
Changes: 03/28/2017 11:49 (86), 08/28/2020 18:26 (8), 11/21/2022 09:45 (4), 09/16/2024 22:20 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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