Vulnerability Description
A flaw was found in libtpms in versions before 0.8.2. The commonly used integration of libtpms with OpenSSL contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libtpms Project | Libtpms | < 0.8.2 |
| Redhat | Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1939664Issue TrackingPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1939664Issue TrackingPatchThird Party Advisory
FAQ
What is CVE-2021-3446?
CVE-2021-3446 is a vulnerability with a CVSS score of 5.5 (MEDIUM). A flaw was found in libtpms in versions before 0.8.2. The commonly used integration of libtpms with OpenSSL contained a vulnerability related to the returned IV (initialization vector) when certain sy...
How severe is CVE-2021-3446?
CVE-2021-3446 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3446?
Check the references section above for vendor advisories and patch information. Affected products include: Libtpms Project Libtpms, Redhat Enterprise Linux, Fedoraproject Fedora.