Vulnerability in Hitachi Id Bravura Security Fabric
CVE-2021-3196
An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Hitachi Id Bravura Security Fabric — versions 12.1.0
Weakness classification (CWE)
References
- www.hitachi.com/hirt/security/index.html (Vendor Advisory)
- www.hitachi.com/hirt/hitachi-sec/2021/601.html (Exploit, Vendor Advisory)
- www.hitachi-id.com/cve-2021-3196-attackers-can-impersonate-another-user (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3196?
- CVE-2021-3196 is a high-severity vulnerability in Hitachi Id Bravura Security Fabric, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.8/10. Published 2021-06-09.
- How severe is CVE-2021-3196?
- High severity. CVSS v3 base score is 8.8 out of 10.