CVE-2021-3446
MEDIUMlibtpms < 0.8.2 - Weak Cryptographic IV Handling in OpenSSL Integration
Title source: llmDescription
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.
References (1)
Core 1
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1939664
Scores
CVSS v3
5.5
EPSS
0.0015
EPSS Percentile
4.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-327
CWE-330
Status
published
Products (3)
fedoraproject/fedora
33
libtpms_project/libtpms
< 0.8.2
redhat/enterprise_linux
8.0
Published
Mar 25, 2021
Tracked Since
Feb 18, 2026