Google Chrome prior 66.0.3359.106 PDFium PDF File 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.
7.4$5k-$25k0.00

A vulnerability, which was classified as critical, was found in Google Chrome (Web Browser). This affects some unknown functionality of the component PDFium. The manipulation as part of a PDF File leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An iterator-invalidation bug in PDFium in Google Chrome prior to 66.0.3359.106 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file.

The bug was discovered 04/17/2018. The weakness was shared 12/04/2018 by Abdulrahman Alqabandi (lokihardt) with Tencent (Website). It is possible to read the advisory at chromereleases.googleblog.com. This vulnerability is uniquely identified as CVE-2018-6088 since 01/23/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 $0-$5k at the moment (estimation calculated on 06/12/2023). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 109290 (GLSA-201804-22 : Chromium, Google Chrome: 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 370889 (Google Chrome Prior to 66.0.3359.117 Multiple Vulnerabilities).

Upgrading to version 66.0.3359.106 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (109290). The entries 127476, 127477, 127478 and 127480 are related to this item.

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: 7.5
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 8.8
NVD Vector: 🔍

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: 109290
Nessus Name: GLSA-201804-22 : Chromium, Google Chrome: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 56832
OpenVAS Name: Debian Security Advisory DSA 4182-1 (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 66.0.3359.106

Timelineinfo

01/23/2018 🔍
04/17/2018 +84 days 🔍
04/17/2018 +0 days 🔍
04/24/2018 +7 days 🔍
04/24/2018 +0 days 🔍
12/04/2018 +224 days 🔍
12/04/2018 +0 days 🔍
12/05/2018 +1 days 🔍
06/12/2023 +1650 days 🔍

Sourcesinfo

Vendor: google.com
Product: google.com

Advisory: RHSA-2018:1195
Researcher: Abdulrahman Alqabandi (lokihardt)
Organization: Tencent
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6088 (🔍)
OVAL: 🔍

SecurityFocus: 103917 - Google Chrome Prior to 66.0.3359.117 Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/05/2018 08:18
Updated: 06/12/2023 18:03
Changes: 12/05/2018 08:18 (79), 04/17/2020 12:13 (7), 06/12/2023 18:03 (4)
Complete: 🔍

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!