WebKit 2.4.11 Regix resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in WebKit 2.4.11. Affected by this vulnerability is an unknown functionality of the component Regix. This manipulation causes resource consumption. This vulnerability appears as CVE-2016-9643. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in WebKit 2.4.11 (Web Browser). It has been declared as problematic. Affected by this vulnerability is some unknown functionality of the component Regix. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. The summary by CVE is:

The regix code in Webkit 2.4.11 allows remote attackers to cause a denial of service (memory consumption) as demonstrated in a large number of ($ (open parenthesis and dollar) followed by {-2,16} and a large number of +) (plus close parenthesis).

The bug was discovered 03/07/2017. The weakness was presented 03/07/2017 by Gustavo Grieco (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2016-9643 since 11/26/2016. 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. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 99167 (macOS : Apple Safari < 10.1 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 196754 (Ubuntu Security Notification for Webkit2gtk Vulnerabilities (USN-3257-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99167), SecurityFocus (BID 94559†) and SecurityTracker (ID 1038137†). See VDB-95939, VDB-96539, VDB-98600 and VDB-98595 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
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: 99167
Nessus Name: macOS : Apple Safari < 10.1 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: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

11/26/2016 🔍
11/28/2016 +2 days 🔍
03/07/2017 +99 days 🔍
03/07/2017 +0 days 🔍
03/07/2017 +0 days 🔍
03/07/2017 +0 days 🔍
03/27/2017 +20 days 🔍
04/03/2017 +7 days 🔍
03/30/2025 +2918 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Gustavo Grieco
Status: Confirmed

CVE: CVE-2016-9643 (🔍)
GCVE (CVE): GCVE-0-2016-9643
GCVE (VulDB): GCVE-100-97603
SecurityFocus: 94559 - WebKit CVE-2016-9643 Denial of Service Vulnerability
OSVDB: - CVE-2016-9643 - Webkit - Denial of Service Issue
SecurityTracker: 1038137

See also: 🔍

Entryinfo

Created: 03/07/2017 21:57
Updated: 03/30/2025 06:02
Changes: 03/07/2017 21:57 (64), 08/18/2020 11:36 (16), 03/30/2025 06:02 (19)
Complete: 🔍
Cache ID: 216::103

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