VDB-131373 · CVE-2019-5786 · Qualys 176630

Google Chrome prior 72.0.3626.121 use after free

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.
6.6$5k-$25k0.00

A vulnerability classified as critical has been found in Google Chrome (Web Browser). This affects an unknown code. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.

The bug was discovered 03/01/2019. The weakness was presented 03/01/2019 by Clement Lecigne with Google as Stable Channel Update for Desktop as confirmed blog post (Website). The advisory is shared at chromereleases.googleblog.com. The public release was coordinated in cooperation with Google. This vulnerability is uniquely identified as CVE-2019-5786 since 01/09/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a private exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/13/2020). It is expected to see the exploit prices for this product increasing in the near future.

It is declared as highly functional. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176630 (Debian Security Update for chromium (DSA 4404-1)). The advisory illustrates:

Google is aware of reports that an exploit for CVE-2019-5786 exists in the wild.

Upgrading to version 72.0.3626.121 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

See 119547 for similar entry.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

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

NVD Base Score: 6.5
NVD Vector: 🔍

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
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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 72.0.3626.121

Timelineinfo

01/09/2019 🔍
03/01/2019 +51 days 🔍
03/01/2019 +0 days 🔍
03/01/2019 +0 days 🔍
03/06/2019 +5 days 🔍
05/13/2020 +434 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: Stable Channel Update for Desktop
Researcher: Clement Lecigne
Organization: Google
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2019-5786 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/06/2019 08:30
Updated: 05/13/2020 20:15
Changes: 03/06/2019 08:30 (67), 05/13/2020 20:15 (3)
Complete: 🔍

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