Published: 19/04/2021 Updated: 07/11/2023

CVSS v2 Base Score: 2.1 | Impact Score: 2.9 | Exploitability Score: 3.9

CVSS v3 Base Score: 5.5 | Impact Score: 3.6 | Exploitability Score: 1.8

VMScore: 187

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

A flaw was found in libtpms in versions prior to 0.8.0. The TPM 2 implementation returns 2048 bit keys with ~1984 bit strength due to a bug in the TCG specification. The bug is in the key creation algorithm in RsaAdjustPrimeCandidate(), which is called before the prime number check. The highest threat from this vulnerability is to data confidentiality.

Vulnerable Product	Search on Vulmon	Subscribe to Product
libtpms project libtpms
redhat enterprise linux 8.0
fedoraproject fedora 33

A security issue was found in libtpms before version 080 The TPM 2 implementation returns 2048 bit keys with ~1984 bit strength due to a bug in the TCG specification The bug is in the key creation algorithm in RsaAdjustPrimeCandidate(), which is called before the prime number check Upgrading to a fixed release (080+) is not sufficient The ...

CWE-331 https://bugzilla.redhat.com/show_bug.cgi?id=1950046 https://github.com/stefanberger/libtpms/issues/183 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NUCZX4S53TUNTSGTCRDNOQZV2V2RI4RJ/https://nvd.nist.gov https://security.archlinux.org/CVE-2021-3505

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CVE-2021-3505

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