Medium severity5.5NVD Advisory· Published Mar 25, 2021· Updated Jun 17, 2026
CVE-2021-3446
CVE-2021-3446
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.
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Affected products
5- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
- libtpms/libtpmsdescription
Patches
Vulnerability mechanics
References
1- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
News mentions
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