CVE-2023-2585Network attack vector

Cross-client token access via unbound device codes

Published Dec 21, 2023 · Updated Aug 2, 2024

Authentication bypass in Red Hat Single Sign-On 7.6 allows remote authenticated users to obtain access tokens for other OAuth clients. The DeviceGrantType token endpoint loads an OAuth2DeviceCodeModel by device_code without checking that its stored clientId matches the requesting client. Exploitation requires Device Authorization Grant on both clients and a user to approve the supplied user code; success grants the malicious client a token on that user's behalf.

CVSS severity8.1
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Red Hat Single Sign-On 7.6 allows remote authenticated users to obtain access tokens for other OAuth clients. The DeviceGrantType token endpoint loads an OAuth2DeviceCodeModel by device_code without checking that its stored clientId matches the requesting client. Exploitation requires Device Authorization Grant on both clients and a user to approve the supplied user code; success grants the malicious client a token on that user's behalf.

The record

CVE
CVE-2023-2585
Published
Dec 21, 2023
Updated
Aug 2, 2024
Vendor
Red Hat
Product
RHEL-8 based Middleware Containers
Classifications
CWE-287, CWE-358, CWE-290, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Red Hat · RHEL-8 based Middleware ContainersAffected versions are unavailable in this record.
Red Hat · Red Hat Single Sign-OnAffected versions are unavailable in this record.

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
3.5Red HatCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-358Improperly Implemented Security Check for Standard
CWE-290Authentication Bypass by Spoofing
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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