Auth bypass in Topdesk
CVE-2023-34923
XML Signature Wrapping (XSW) in SAML-based Single Sign-on feature in TOPdesk v12.10.12 allows bad actors with credentials to authenticate with the Identity Provider (IP) to impersonate any TOPdesk user via SAML Response manipulation.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Topdesk — versions 12.10.12
Weakness classification (CWE)
References
- char49.com/articles/topdesk-vulnerable-to-xml-signature-wrapping-attacks (Technical Description, Exploit, Third Party Advisory)
- my.topdesk.com/tas/public/ssp/content/detail/knowledgeitem (Permissions Required)
Frequently asked questions
- What is CVE-2023-34923?
- CVE-2023-34923 is a high-severity vulnerability in Topdesk, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2023-06-22.
- How severe is CVE-2023-34923?
- High severity. CVSS v3 base score is 8.1 out of 10.