Contiki-NG up to 4.4 RPL buffer overflow

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CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

A vulnerability classified as critical was found in Contiki-NG up to 4.4. This vulnerability affects an unknown code block of the component RPL Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-120. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In versions prior to 4.5, buffer overflow can be triggered by an input packet when using either of Contiki-NG's two RPL implementations in source-routing mode. The problem has been patched in Contiki-NG 4.5. Users can apply the patch for this vulnerability out-of-band as a workaround.

The weakness was presented 06/19/2021. The advisory is available at github.com. This vulnerability was named CVE-2021-21282 since 12/22/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 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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CPE 2.3infoedit

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CVSSv3infoedit

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

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

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-120
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Contiki-NG 4.5
Patch: github.com

Timelineinfoedit

12/22/2020 CVE assigned
06/19/2021 +178 days Advisory disclosed
06/19/2021 +0 days VulDB entry created
06/21/2021 +2 days VulDB last update

Sourcesinfoedit

Advisory: github.com
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2021-21282 (🔒)

Entryinfoedit

Created: 06/19/2021 07:57 AM
Updated: 06/21/2021 05:04 PM
Changes: (1) source_cve_cna
Complete: 🔍

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