SB2024083059 - Fedora 40 update for tpm2-tools, tpm2-tss
Published: August 30, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Insufficient verification of data authenticity (CVE-ID: CVE-2024-29040)
CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to missing checks for the magic number. A local user can generate arbitrary quote data, which may not be detected by Fapi_VerifyQuote.
2) Mutable Attestation or Measurement Reporting Data (CVE-ID: CVE-2024-29038)
CWE-ID: CWE-1283 - Mutable Attestation or Measurement Reporting Data
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to improper input validation. A local user can generate arbitrary quote data which is not detected by tpm2 checkquote and gain access to sensitive information.
3) Reliance on Untrusted Inputs in a Security Decision (CVE-ID: CVE-2024-29039)
CWE-ID: CWE-807 - Reliance on Untrusted Inputs in a Security Decision
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to manipulate the TMP state.
The vulnerability exists due to insufficient validation of PCR input. A local user can alter TPML_PCR_SELECTION and manipulate the TMP state.
Remediation
Install update from vendor's website.