swtpm prior 0.4.2/0.5.1 temp file

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in swtpm. It has been classified as problematic. Affected by this vulnerability is an unknown functionality. Performing a manipulation results in temp file. This vulnerability is identified as CVE-2020-28407. The attack is only possible with local access. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in swtpm. This affects an unknown code block. The manipulation with an unknown input leads to a temp file vulnerability. CWE is classifying the issue as CWE-377. Creating and using insecure temporary files can leave application and system data vulnerable to attack. This is going to have an impact on integrity. The summary by CVE is:

In swtpm before 0.4.2 and 0.5.x before 0.5.1, a local attacker may be able to overwrite arbitrary files via a symlink attack against a temporary file such as TMP2-00.permall.

The weakness was released 11/03/2023. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2020-28407 since 11/10/2020. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 299967 (Oracle Linux 8 : virt:kvm_utils3 (ELSA-2026-50118)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.4.2 or 0.5.1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (299967). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Temp file
CWE: CWE-377
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 299967
Nessus Name: Oracle Linux 8 : virt:kvm_utils3 (ELSA-2026-50118)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: swtpm 0.4.2/0.5.1

Timelineinfo

11/10/2020 🔍
11/03/2023 +1088 days 🔍
11/03/2023 +0 days 🔍
03/02/2026 +850 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2020-28407 (🔍)
GCVE (CVE): GCVE-0-2020-28407
GCVE (VulDB): GCVE-100-244431

Entryinfo

Created: 11/03/2023 07:50
Updated: 03/02/2026 03:52
Changes: 11/03/2023 07:50 (37), 11/30/2023 17:15 (11), 03/02/2026 03:52 (17)
Complete: 🔍
Cache ID: 216::103

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

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