Google Chrome up to 56 Extension use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.1$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Google Chrome up to 56. This vulnerability affects unknown code of the component Extension. This manipulation causes use after free. This vulnerability is registered as CVE-2017-5021. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Google Chrome up to 56 (Web Browser). It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Extension. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A use after free in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page.

The bug was discovered 01/25/2017. The weakness was published 01/25/2017 by Armin Razmdjou (Paul) with Tresorit as Stable Channel Update for Desktop, January 2017 as confirmed release notes (Website). It is possible to read the advisory at chromereleases.googleblog.com. This vulnerability is known as CVE-2017-5021 since 01/02/2017. 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 pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/04/2020). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 96852 (GLSA-201701-66 : Chromium: 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 236251 (Red Hat Update forchromium-browser Security (RHSA-2017:0206)).

Upgrading to version 56.0.2924.76 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 Tenable (96852), SecurityFocus (BID 95792†) and SecurityTracker (ID 1037718†). Similar entries are available at VDB-96042, VDB-96043, VDB-96044 and VDB-96045. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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: Use after free
CWE: CWE-416 / CWE-119
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: 96852
Nessus Name: GLSA-201701-66 : Chromium: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703776
OpenVAS Name: Debian Security Advisory DSA 3776-1 (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 56.0.2924.76

Timelineinfo

01/02/2017 🔍
01/25/2017 +23 days 🔍
01/25/2017 +0 days 🔍
01/25/2017 +0 days 🔍
01/25/2017 +0 days 🔍
01/26/2017 +1 days 🔍
01/27/2017 +1 days 🔍
01/30/2017 +3 days 🔍
02/17/2017 +18 days 🔍
08/04/2020 +1264 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: Stable Channel Update for Desktop, January 2017
Researcher: Armin Razmdjou (Paul)
Organization: Tresorit
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-5021 (🔍)
GCVE (CVE): GCVE-0-2017-5021
GCVE (VulDB): GCVE-100-96055

OVAL: 🔍

SecurityFocus: 95792 - Google Chrome Multiple Security Vulnerabilities
OSVDB: - CVE-2017-5021 - Google - Chrome - Use-After-Free Issue
SecurityTracker: 1037718

See also: 🔍

Entryinfo

Created: 01/27/2017 12:22
Updated: 08/04/2020 09:43
Changes: 01/27/2017 12:22 (83), 08/04/2020 09:43 (9)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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