Web Developer 0.4.9 on Chrome DGA malicious code

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Web Developer 0.4.9 on Chrome and classified as critical. The affected element is an unknown function of the component DGA Handler. Such manipulation leads to malicious code. This vulnerability is traded as CVE-2017-20202. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Web Developer 0.4.9 on Chrome. Affected by this issue is an unknown code of the component DGA Handler. The manipulation with an unknown input leads to a malicious code vulnerability. Using CWE to declare the problem leads to CWE-506. The product contains code that appears to be malicious in nature. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Web Developer for Chrome v0.4.9 contained malicious code that generated a domain via a DGA and fetched a remote script. The fetched script conditionally loaded follow-on modules that performed extensive ad substitution and malvertising, displayed fake “repair” alerts that redirected users to affiliate programs, and attempted to harvest credentials when users logged in. Injected components enumerate common banner sizes for substitution, replace third-party ad calls, and redirect victim traffic to affiliate landing pages. Potential impacts include user-level code execution in the browser context, large-scale ad fraud and traffic hijacking, credential theft, and exposure to additional payloads delivered by the actor. The compromise was reported on by the maintainer of Web Developer for Chrome on August 2, 2017 and remediated in v0.5.0.

The advisory is available at web.archive.org. This vulnerability is handled as CVE-2017-20202 since 10/08/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 0.5.0 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

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

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Malicious code
CWE: CWE-506
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Web Developer 0.5.0

Timelineinfo

10/08/2025 CVE reserved
10/09/2025 +1 days Advisory disclosed
10/09/2025 +0 days VulDB entry created
10/09/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: web.archive.org
Status: Confirmed

CVE: CVE-2017-20202 (🔒)
GCVE (CVE): GCVE-0-2017-20202
GCVE (VulDB): GCVE-100-327674

Entryinfo

Created: 10/09/2025 07:35
Changes: 10/09/2025 07:35 (66)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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