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CVE-2020-26877

CVE information

Published

1 month ago

Last Modified

1 month ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

Description

ApiFest OAuth 2.0 Server 0.3.1 does not validate the redirect URI in accordance with RFC 6749 and is susceptible to an open redirector attack. Specifically, it directly sends an authorization code to the redirect URI submitted with the authorization request, without checking whether the redirect URI is registered by the client who initiated the request. This allows an attacker to craft a request with a manipulated redirect URI (redirect_uri parameter), which is under the attacker's control, and consequently obtain the leaked authorization code when the server redirects the client to the manipulated redirect URI with an authorization code. NOTE: this is similar to CVE-2019-3778..

CVSSv2.0 Score

Severity
Medium
Base Score
5.8/10
Exploit Score
8.6/10
Access Vector
Network
Access Complexity
Medium
Authentication Required
None
Impact Score
4.9/10
Confidentiality Impact
Partial
Availability Impact
None
Integrity Impact
Partial

CVSSv3.1 Score

Severity
Medium
Base Score
6.1/10
Exploit Score
2.8/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
2.7/10
Confidentiality Impact
Low
Availability Impact
None
Integrity Impact
Low
Scope
Changed
User Interaction
Required

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:a:apifest:oauth_2.0_server:0.3.1:*:*:*:*:*:*:*
  Yes
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