Google Chrome up to 42.0.2311.x Blink MutationObserver.cpp disconnect use after free

CVSS Meta Temp Score
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CTI Interest Score
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4.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Google Chrome up to 42.0.2311.x. It has been declared as problematic. This impacts the function MutationObserver::disconnect of the file core/dom/MutationObserver.cpp of the component Blink. Executing a manipulation can lead to use after free. This vulnerability is tracked as CVE-2015-1243. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Google Chrome up to 42.0.2311.x (Web Browser) and classified as problematic. This vulnerability affects the function MutationObserver::disconnect of the file core/dom/MutationObserver.cpp of the component Blink. 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 availability. CVE summarizes:

Use-after-free vulnerability in the MutationObserver::disconnect function in core/dom/MutationObserver.cpp in the DOM implementation in Blink, as used in Google Chrome before 42.0.2311.135, allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering an attempt to unregister a MutationObserver object that is not currently registered.

The weakness was disclosed 05/01/2015 by Saif El-Sherei with Google (Website). The advisory is shared for download at googlechromereleases.blogspot.com. This vulnerability was named CVE-2015-1243 since 01/21/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/10/2022). 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 83277 (Ubuntu 14.04 LTS / 14.10 / 15.04 : oxide-qt vulnerabilities (USN-2582-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196104 (Ubuntu Security Notification for Oxide-qt Vulnerabilities (USN-2582-1)).

Upgrading to version 42.0.2311.135 eliminates this vulnerability. The upgrade is hosted for download at chrome.google.com.

The vulnerability is also documented in the databases at X-Force (102987), Tenable (83277), SecurityFocus (BID 74389†) and Vulnerability Center (SBV-49912†). The entry VDB-75173 is pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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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: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 83277
Nessus Name: Ubuntu 14.04 LTS / 14.10 / 15.04 : oxide-qt vulnerabilities (USN-2582-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703242
OpenVAS Name: Debian Security Advisory DSA 3242-1 (chromium-browser - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrome 42.0.2311.135

Timelineinfo

01/21/2015 🔍
04/28/2015 +97 days 🔍
04/28/2015 +0 days 🔍
04/29/2015 +1 days 🔍
05/01/2015 +2 days 🔍
05/01/2015 +0 days 🔍
05/02/2015 +1 days 🔍
05/07/2015 +5 days 🔍
05/10/2022 +2560 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: USN-2582-1
Researcher: Saif El-Sherei
Organization: Google
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1243 (🔍)
GCVE (CVE): GCVE-0-2015-1243
GCVE (VulDB): GCVE-100-75172

OVAL: 🔍

X-Force: 102987 - Google Chrome MutationObserver code execution
SecurityFocus: 74389 - Google Chrome Prior to 42.0.2311.135 Multiple Security Vulnerabilities
SecurityTracker: 1032234
Vulnerability Center: 49912 - Google Chrome <42.0.2311.135 Remote Code Execution due to Use After Free in DOM, Medium

See also: 🔍

Entryinfo

Created: 05/02/2015 17:41
Updated: 05/10/2022 08:24
Changes: 05/02/2015 17:41 (72), 06/27/2017 04:01 (11), 05/10/2022 08:16 (4), 05/10/2022 08:21 (1), 05/10/2022 08:24 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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