Vulnerability identifier: #VU77293

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3746

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libtpms
Universal components / Libraries / Libraries used by multiple products

Vendor: Stefan Berger

Description

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary error. A remote attacker can trick the victim into opening a specially-crafted TPM2 command packets, trigger memory corruption and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libtpms: 0.6.0 - 0.8.4

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=1998588

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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.