XSS in Red Hat Single Sign-On 7
CVE-2022-4137
A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page. This flaw requires a user or administrator to interact with a link in order to be vulnerable. This may compromise user details, allowing it to be changed or collected by an attacker.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.012 (67.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.000
Affected products
- Red Hat Single Sign-On 7
- Red Hat Single Sign-On 7.6 For Rhel 7 — versions 0:18.0.6-1.redhat_00001.1.el7sso
- Red Hat Single Sign-On 7.6 For Rhel 8 — versions 0:18.0.6-1.redhat_00001.1.el8sso
- Red Hat Single Sign-On 7.6 For Rhel 9 — versions 0:18.0.6-1.redhat_00001.1.el9sso
- Red Hat Enterprise Linux — versions 7.0, 8.0, 9.0
- Red Hat Keycloak
- Red Hat Single Sign-On — versions 7.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:1043 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:1044 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:1045 (vendor-advisory, Vendor Advisory)
- access.redhat.com/errata/RHSA-2023:1049 (vendor-advisory, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2022-4137 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-4137?
- CVE-2022-4137 is a high-severity vulnerability in Red Hat Single Sign-On 7, classified under CWE-81. CVSS score: 8.1/10. Published 2023-09-25.
- How severe is CVE-2022-4137?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2022-4137 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.