Auth bypass in Adnovum Nevisauth
CVE-2015-5372
The SAML 2.0 implementation in AdNovum nevisAuth 4.13.0.0 before 4.18.3.1, when using SAML POST-Binding, does not match all attributes of the X.509 certificate embedded in the assertion against the certificate from the identity provider (IdP), which allows remote attackers to inject arbitrary SAML assertions via a crafted certificate.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.009 (57.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- packetstormsecurity.com/files/133628/nevisAuth-Authentication-Bypass.html
- seclists.org/fulldisclosure/2015/Sep/87 (mailing-list)
- www.csnc.ch/misc/files/advisories/CVE-2015-5372_AdNovum_nevisAuth_Authenticatio…
- www.securityfocus.com/archive/1/536508/100/0/threaded (mailing-list)
- blog.csnc.ch/2015/09/saml-sp-authentication-bypass-vulnerability-in-nevisauth
Frequently asked questions
- What is CVE-2015-5372?
- CVE-2015-5372 is a vulnerability in Adnovum Nevisauth, classified under Improper Authentication. Published 2015-09-28.
- Is CVE-2015-5372 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.