Out-of-bounds read in libtpms
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3623 |
| CWE-ID | CWE-125 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
libtpms Universal components / Libraries / Libraries used by multiple products |
| Vendor | Stefan Berger |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Out-of-bounds read
EUVDB-ID: #VU54504
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3623
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionslibtpms: 0.5.2 - 0.8.3
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=1976806
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
