VDB-178863 · CVE-2021-33501 · GCVE-0-2021-33501

Overwolf Client 0.169.0.22 overwolfstore:/ URL cross site scripting

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.
3.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Overwolf Client 0.169.0.22. This vulnerability affects unknown code of the component overwolfstore:/ URL Handler. Performing a manipulation results in cross site scripting. This vulnerability was named CVE-2021-33501. The attack may be initiated remotely. In addition, an exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Overwolf Client 0.169.0.22. It has been classified as problematic. This affects some unknown processing of the component overwolfstore:/ URL Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity.

The weakness was presented 07/19/2021. It is possible to read the advisory at swordbytes.com. This vulnerability is uniquely identified as CVE-2021-33501. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The exploit is shared for download at swordbytes.com. It is declared as proof-of-concept.

Applying a patch is able to eliminate this problem.

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

Productinfo

Vendor

Overwolf

Name

Client

Version

0.169.0.22

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/21/2021 🔍
07/19/2021 +59 days 🔍
07/19/2021 +0 days 🔍
07/22/2021 +3 days 🔍

Sourcesinfo

Advisory: swordbytes.com
Status: Confirmed

CVE: CVE-2021-33501 (🔍)
GCVE (CVE): GCVE-0-2021-33501
GCVE (VulDB): GCVE-100-178863
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/19/2021 19:17
Updated: 07/22/2021 08:30
Changes: 07/19/2021 19:17 (39), 07/19/2021 19:18 (1), 07/22/2021 08:30 (2)
Complete: 🔍
Cache ID: 216::103