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CVE-2023-6787— Keycloak: session hijacking via re-authentication

Quick assessment

Affected
Red Hat Red Hat build of Keycloak 22
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat Keycloak是美国红帽（Red Hat）公司的一套为现代应用和服务提供身份验证和管理功能的软件。 Red Hat Keycloak 存在安全漏洞，该漏洞源于存在身份验证错误漏洞。

CVSS 6.5 · Medium EPSS 0.74% · P52
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I. Basic Information for CVE-2023-6787

Vulnerability Information
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Vulnerability Title
Keycloak: session hijacking via re-authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Keycloak that occurs from an error in the re-authentication mechanism within org.keycloak.authentication. This flaw allows hijacking an active Keycloak session by triggering a new authentication process with the query parameter "prompt=login," prompting the user to re-enter their credentials. If the user cancels this re-authentication by selecting "Restart login," an account takeover may occur, as the new session, with a different SUB, will possess the same SID as the previous session.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Keycloak 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Keycloak是美国红帽（Red Hat）公司的一套为现代应用和服务提供身份验证和管理功能的软件。 Red Hat Keycloak 存在安全漏洞，该漏洞源于存在身份验证错误漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat build of Keycloak 22 22.0.10-1 ~ * cpe:/a:redhat:build_keycloak:22::el9
Red Hat Red Hat build of Keycloak 22 22-13 ~ * cpe:/a:redhat:build_keycloak:22::el9
Red Hat Red Hat build of Keycloak 22 22-16 ~ * cpe:/a:redhat:build_keycloak:22::el9
Red Hat Red Hat build of Keycloak 22.0.10 - cpe:/a:redhat:build_keycloak:22
Red Hat Red Hat Single Sign-On 7 - cpe:/a:redhat:red_hat_single_sign_on:7

II. Public POCs for CVE-2023-6787

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III. Intelligence Information for CVE-2023-6787

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Vendor Advisories for CVE-2023-6787 (4)

IV. Related Vulnerabilities

Same weakness: CWE-287

V. Comments for CVE-2023-6787

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