SB2021062517 - Fedora 34 update for libtpms
Published: June 25, 2021
Security Bulletin ID
SB2021062517
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-3623)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to crash the system.
The vulnerability exists due to a boundary condition. A local user can use specially-crafted TPM 2 command packets containing illegal values to trigger an out-of-bounds read error and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.