Flatpak up to 1.10.1 File Forwarding injection

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Flatpak up to 1.10.1. Affected by this vulnerability is an unknown functionality of the component File Forwarding. The manipulation leads to injection. This vulnerability is traded as CVE-2021-21381. An attack has to be approached locally. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Flatpak up to 1.10.1 and classified as critical. This issue affects some unknown processing of the component File Forwarding. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The weakness was shared 03/11/2021. The advisory is shared at github.com. The identification of this vulnerability is CVE-2021-21381. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 236596 (Alibaba Cloud Linux 3 : 0023: flatpak (ALINUX3-SA-2021:0023)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.10.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (236596). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 236596
Nessus Name: Alibaba Cloud Linux 3 : 0023: flatpak (ALINUX3-SA-2021:0023)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Flatpak 1.10.2
Patch: github.com

Timelineinfo

12/22/2020 🔍
03/11/2021 +79 days 🔍
03/11/2021 +0 days 🔍
05/20/2025 +1531 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-21381 (🔍)
GCVE (CVE): GCVE-0-2021-21381
GCVE (VulDB): GCVE-100-171149

Entryinfo

Created: 03/11/2021 21:15
Updated: 05/20/2025 18:58
Changes: 03/11/2021 21:15 (39), 03/31/2021 18:18 (6), 03/31/2021 18:20 (19), 05/20/2025 18:58 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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