PT-2020-8469 · Unknown · Oauth2-Server

Tamjidrahat · Published 2020-10-04 · Updated 2024-08-05 · CVE-2017-18924

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: oauth2-server (aka node-oauth2-server) versions 3.1.1 and earlier

Description: The issue is related to the implementation of OAuth 2.0 without PKCE, which does not prevent authorization code injection. This is similar to a previously known issue. The vendor has stated that they do not consider this a vulnerability with the library itself, as the relevant RFC is an extension.

Recommendations: For versions 3.1.1 and earlier, consider implementing PKCE to prevent authorization code injection as a mitigation measure. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2017-18924

GHSA-2FW4-MGQ9-39CX

Affected Products

Oauth2-Server

References · 10

• 🔥 https://github.com/oauthjs/node-oauth2-server/issues/637 · Exploit
• 🔥 https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15 · Exploit
• https://github.com/oauthjs/node-oauth2-server/pull/452 · Patch
• https://osv.dev/vulnerability/CVE-2017-18924 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-2fw4-mgq9-39cx · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18924 · Security Note
• https://t.me/cvenotify/89296 · Telegram Post
• https://codeburst.io/missing-the-point-in-securing-oauth-2-0-83968708b467 · Note
• https://t.me/cibsecurity/15039 · Telegram Post
• https://tools.ietf.org/html/rfc7636 · Note