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CVE-2021-3505

nvd nist
Published: Apr 19, 2021Modified: Nov 21, 2024

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5.5
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability: 1.8 / Impact: 3.6
Source: NVD

Description

A flaw was found in libtpms in versions before 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.

Affected (3)

Libtpms Project
1 product
Libtpms
Redhat
1 product
Enterprise Linux
Fedoraproject
1 product
Fedora
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Libtpms
Before 0.8.0
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Enterprise Linux
Version 8.0
Configuration C
1 vulnerable
Vulnerable SoftwareAffected Versions
Fedora
Version 33

Related CWEs

CWE-331
Insufficient Entropy
The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others.

References (6)

Source: secalert@redhat.com
Issue TrackingPatchThird Party Advisory
Source: secalert@redhat.com
ExploitPatchThird Party Advisory
Source: secalert@redhat.com
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.