VDB-118831 · CVE-2018-11712 · Bug 230886

WebKit 2.20.0/2.20.1 TLS Certificate Verification SocketStreamHandleImplSoup.cpp certificate validation

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.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in WebKit 2.20.0/2.20.1. This impacts an unknown function of the file WebCore/platform/network/soup/SocketStreamHandleImplSoup.cpp of the component TLS Certificate Verification. This manipulation causes certificate validation. This vulnerability is handled as CVE-2018-11712. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in WebKit 2.20.0/2.20.1 (Web Browser) and classified as critical. Affected by this vulnerability is some unknown processing of the file WebCore/platform/network/soup/SocketStreamHandleImplSoup.cpp of the component TLS Certificate Verification. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

WebCore/platform/network/soup/SocketStreamHandleImplSoup.cpp in the libsoup network backend of WebKit, as used in WebKitGTK+ versions 2.20.0 and 2.20.1, failed to perform TLS certificate verification for WebSocket connections.

The bug was discovered 06/04/2018. The weakness was released 06/04/2018 (Website). It is possible to read the advisory at bugs.webkit.org. This vulnerability is known as CVE-2018-11712 since 06/04/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 112078 (GLSA-201808-04 : WebkitGTK+: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171677 (SUSE Enterprise Linux Security Update for webkit2gtk3 (SUSE-SU-2018:3387-1)).

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

The vulnerability is also documented in the databases at Tenable (112078) and SecurityFocus (BID 102775†). Entries connected to this vulnerability are available at VDB-111120, VDB-111127, VDB-111128 and VDB-111129. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Web Browser

Name

WebKit

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 112078
Nessus Name: GLSA-201808-04 : WebkitGTK+: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/04/2018 🔍
06/04/2018 +0 days 🔍
06/04/2018 +0 days 🔍
06/04/2018 +0 days 🔍
06/04/2018 +0 days 🔍
08/22/2018 +79 days 🔍
08/23/2018 +1 days 🔍
03/21/2023 +1671 days 🔍

Sourcesinfo

Advisory: 230886
Status: Confirmed

CVE: CVE-2018-11712 (🔍)
GCVE (CVE): GCVE-0-2018-11712
GCVE (VulDB): GCVE-100-118831
SecurityFocus: 102775

See also: 🔍

Entryinfo

Created: 06/04/2018 21:23
Updated: 03/21/2023 10:23
Changes: 06/04/2018 21:23 (58), 02/14/2020 08:57 (9), 03/21/2023 10:23 (3)
Complete: 🔍
Cache ID: 216::103