Denial of service in libtpms



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3569
CWE-ID CWE-121
Exploitation vector Local
Public exploit N/A
Vulnerable software
 libtpms
Universal components / Libraries / Libraries used by multiple products

Vendor Stefan Berger

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Stack-based buffer overflow

EUVDB-ID: #VU54503

Risk: Low

CVSSv4.0: 4.3 [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]

CVE-ID: CVE-2021-3569

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in libtpms while decrypting data using RSA. A local user can trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libtpms: 0.5.2 - 0.7.1

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=1964358


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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