oauth2-server up to 3.1.1 URI Pattern redirect_uri cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in oauth2-server up to 3.1.1. It has been rated as problematic. Affected by this issue is some unknown functionality of the component URI Pattern Handler. This manipulation of the argument redirect_uri causes cross site scripting. This vulnerability is handled as CVE-2020-26938. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in oauth2-server up to 3.1.1 and classified as problematic. Affected by this vulnerability is an unknown function of the component URI Pattern Handler. The manipulation of the argument redirect_uri with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

In oauth2-server (aka node-oauth2-server) through 3.1.1, the value of the redirect_uri parameter received during the authorization and token request is checked against an incorrect URI pattern ("[a-zA-Z][a-zA-Z0-9+.-]+:") before making a redirection. This allows a malicious client to pass an XSS payload through the redirect_uri parameter while making an authorization request. NOTE: this vulnerability is similar to CVE-2020-7741.

The weakness was released 08/30/2022 as 637. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2020-26938 since 10/10/2020. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 7.2
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/10/2020 🔍
08/30/2022 +689 days 🔍
08/30/2022 +0 days 🔍
10/10/2022 +41 days 🔍

Sourcesinfo

Advisory: 637
Status: Confirmed

CVE: CVE-2020-26938 (🔍)
GCVE (CVE): GCVE-0-2020-26938
GCVE (VulDB): GCVE-100-207571

Entryinfo

Created: 08/30/2022 11:43
Updated: 10/10/2022 08:25
Changes: 08/30/2022 11:43 (39), 10/10/2022 08:25 (11)
Complete: 🔍
Cache ID: 216::103

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