Google Chrome prior 47.0.2526.80 HTML Entity WebPageSerializerImpl.cpp openTagToString input 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.
4.1$5k-$25k0.00

A vulnerability has been found in Google Chrome (Web Browser) and classified as critical. This vulnerability affects the function WebPageSerializerImpl::openTagToString of the file WebKit/Source/web/WebPageSerializerImpl.cpp of the component HTML Entity Handler. The manipulation with the input value '"' leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity. CVE summarizes:

The WebPageSerializerImpl::openTagToString function in WebKit/Source/web/WebPageSerializerImpl.cpp in the page serializer in Google Chrome before 47.0.2526.80 does not properly use HTML entities, which might allow remote attackers to inject arbitrary web script or HTML via a crafted document, as demonstrated by a double-quote character inside a single-quoted string.

The weakness was published 12/14/2015 (Website). The advisory is shared for download at codereview.chromium.org. This vulnerability was named CVE-2015-6790 since 08/31/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 87360 (Debian DSA-3418-1 : chromium-browser - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196360 (Ubuntu Security Notification for Oxide-qt Vulnerabilities (USN-2860-1)).

Upgrading to version 47.0.2526.80 eliminates this vulnerability. The upgrade is hosted for download at chrome.google.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (87360). Similar entries are available at 79778, 79779, 79781 and 79782.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

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

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 87360
Nessus Name: Debian DSA-3418-1 : chromium-browser - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703418
OpenVAS Name: Debian Security Advisory DSA 3418-1 (chromium-browser - security update)
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: 🔍

Upgrade: Chrome 47.0.2526.80

Timelineinfo

08/31/2015 🔍
12/08/2015 +99 days 🔍
12/09/2015 +1 days 🔍
12/14/2015 +5 days 🔍
12/14/2015 +0 days 🔍
12/14/2015 +0 days 🔍
12/15/2015 +1 days 🔍
12/15/2015 +0 days 🔍
07/01/2022 +2390 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: USN-2860-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-6790 (🔍)
OVAL: 🔍

Vulnerability Center: 55022 - Google Chrome <47.0.2526.80 Unspecified Remote Vulnerability due to Escaping Issue in Saved Pages, Medium
SecurityFocus: 78734

See also: 🔍

Entryinfo

Created: 12/15/2015 09:15
Updated: 07/01/2022 04:01
Changes: 12/15/2015 09:15 (68), 05/14/2018 09:00 (10), 07/01/2022 03:54 (3), 07/01/2022 04:01 (1)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

Do you need the next level of professionalism?

Upgrade your account now!