5.5

CVE-2021-3446

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.

Data is provided by the National Vulnerability Database (NVD)
Libtpms Project ≫ Libtpms Version < 0.8.2
Redhat ≫ Enterprise Linux Version8.0 SwEditionadvanced_virtualization
Fedoraproject ≫ Fedora Version33
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.04% 0.081
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvd@nist.gov 2.1 3.9 2.9
AV:L/AC:L/Au:N/C:P/I:N/A:N
CWE-327 Use of a Broken or Risky Cryptographic Algorithm

The product uses a broken or risky cryptographic algorithm or protocol.

CWE-330 Use of Insufficiently Random Values

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

https://bugzilla.redhat.com/show_bug.cgi?id=1939664
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