VDB-182724 · CVE-2021-3785 · GCVE-0-2021-3785

yourls Web Page Generation 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.
6.0	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in yourls. This vulnerability affects unknown code of the component Web Page Generation Handler. The manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2021-3785. The attack may be launched remotely. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in yourls (the affected version unknown). It has been classified as problematic. Affected is an unknown part of the component Web Page Generation 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 shared 09/15/2021 as 1d8e224ebabb8a4c75b97f026950ed710faab0ff. The advisory is shared for download at huntr.dev. This vulnerability is traded as CVE-2021-3785 since 09/09/2021. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Applying the patch 1d8e224ebabb8a4c75b97f026950ed710faab0ff is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

yourls

License

open-source

Website

Product: https://github.com/yourls/yourls/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 3.5
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (huntr.dev): 🔍

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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 1d8e224ebabb8a4c75b97f026950ed710faab0ff

Timelineinfo

09/09/2021 🔍
09/15/2021 +6 days 🔍
09/15/2021 +0 days 🔍
09/19/2021 +4 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1d8e224ebabb8a4c75b97f026950ed710faab0ff
Status: Not defined
Confirmation: 🔍

CVE: CVE-2021-3785 (🔍)
GCVE (CVE): GCVE-0-2021-3785
GCVE (VulDB): GCVE-100-182724

Entryinfo

Created: 09/15/2021 16:45
Updated: 09/19/2021 08:15
Changes: 09/15/2021 16:45 (49), 09/19/2021 08:12 (2), 09/19/2021 08:15 (1)
Complete: 🔍
Cache ID: 216::103