Nanopb up to 0.3.9.7/0.4.4 Message Type free/realloc oneof release of reference

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Nanopb up to 0.3.9.7/0.4.4. This vulnerability affects the function free/realloc of the component Message Type Handler. Such manipulation of the argument oneof leads to release of reference. This vulnerability is traded as CVE-2021-21401. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Nanopb up to 0.3.9.7/0.4.4. Affected by this issue is the function free/realloc of the component Message Type Handler. The manipulation of the argument oneof with an unknown input leads to a release of reference vulnerability. Using CWE to declare the problem leads to CWE-763. The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly. Impacted is confidentiality, integrity, and availability.

The weakness was shared 03/24/2021. The advisory is available at github.com. This vulnerability is handled as CVE-2021-21401. Technical details are known, but there is no available exploit.

Upgrading to version 0.3.9.8 or 0.4.5 eliminates this vulnerability. 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.

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Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Release of reference
CWE: CWE-763 / CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Nanopb 0.3.9.8/0.4.5
Patch: github.com

Timelineinfo

12/22/2020 🔍
03/24/2021 +92 days 🔍
03/24/2021 +0 days 🔍
04/04/2021 +11 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-21401 (🔍)
GCVE (CVE): GCVE-0-2021-21401
GCVE (VulDB): GCVE-100-171614

Entryinfo

Created: 03/24/2021 11:02
Updated: 04/04/2021 08:51
Changes: 03/24/2021 11:02 (41), 04/04/2021 08:45 (5), 04/04/2021 08:51 (8)
Complete: 🔍
Cache ID: 216::103

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