libtpms up to 0.6.6/0.7.9/0.8.5 TPM2 Command Packet memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in libtpms up to 0.6.6/0.7.9/0.8.5. It has been rated as critical. Affected by this issue is some unknown functionality of the component TPM2 Command Packet Handler. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2021-3746. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in libtpms up to 0.6.6/0.7.9/0.8.5. This issue affects an unknown function of the component TPM2 Command Packet Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability.

The weakness was disclosed 10/20/2021. It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2021-3746 since 08/27/2021. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 239862 (TencentOS Server 3: libtpms (TSSA-2022:0274)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (239862). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 239862
Nessus Name: TencentOS Server 3: libtpms (TSSA-2022:0274)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/27/2021 🔍
10/20/2021 +54 days 🔍
10/20/2021 +0 days 🔍
06/19/2025 +1338 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2021-3746 (🔍)
GCVE (CVE): GCVE-0-2021-3746
GCVE (VulDB): GCVE-100-185087

Entryinfo

Created: 10/20/2021 11:10
Updated: 06/19/2025 11:02
Changes: 10/20/2021 11:10 (36), 10/27/2021 18:59 (1), 10/27/2021 19:07 (18), 10/27/2021 19:14 (1), 06/19/2025 11:02 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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