Upstream information

CVE-2021-3505 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 2.1
Vector AV:L/AC:L/Au:N/C:P/I:N/A:N
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.5 4
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Access Vector Local Local
Access Complexity Low Low
Privileges Required Low None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High Low
Integrity Impact None None
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1184939 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Module for Server Applications 15 SP3
  • libtpms-devel >= 0.8.2-1.1
  • libtpms0 >= 0.8.2-1.1
openSUSE Tumbleweed
  • libtpms-devel >= 0.8.4-2.2
  • libtpms0 >= 0.8.4-2.2
Patchnames:
openSUSE Tumbleweed GA libtpms-devel-0.8.4-2.2