VDB-179464 · CVE-2020-22284 · Nessus 320846

FSF IwIP 2.1.2 6LoWPAN Packet zepif_linkoutput buffer overflow

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 (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.5	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in FSF IwIP 2.1.2. Affected is the function zepif_linkoutput of the component 6LoWPAN Packet Handler. Executing a manipulation can lead to buffer overflow. The identification of this vulnerability is CVE-2020-22284. There is no exploit available.

Detailsinfo

A vulnerability has been found in FSF IwIP 2.1.2 and classified as problematic. This vulnerability affects the function zepif_linkoutput of the component 6LoWPAN Packet Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality.

The weakness was shared 07/23/2021. The advisory is shared for download at savannah.nongnu.org. This vulnerability was named CVE-2020-22284. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 320846 (Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : lwIP vulnerabilities (USN-8423-1)), 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 (320846). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

IwIP

Version

2.1.2

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 320846
Nessus Name: Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : lwIP vulnerabilities (USN-8423-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/13/2020 🔍
07/23/2021 +344 days 🔍
07/23/2021 +0 days 🔍
06/12/2026 +1785 days 🔍

Sourcesinfo

Advisory: savannah.nongnu.org
Status: Not defined

CVE: CVE-2020-22284 (🔍)
GCVE (CVE): GCVE-0-2020-22284
GCVE (VulDB): GCVE-100-179464

Entryinfo

Created: 07/23/2021 07:53
Updated: 06/12/2026 23:53
Changes: 07/23/2021 07:53 (37), 07/27/2021 14:11 (2), 06/12/2026 23:53 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.