2020-22284 | FSF IwIP 6LoWPAN Packet zepif_linkoutput buffer overflow


CVSS Meta Temp Score

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Current Exploit Price (≈)

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CTI Interest Score

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3.5 $0-$5k 0.10

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 memory corruption vulnerability. The CWE definition for the vulnerability is CWE-120. As an impact it is known to affect confidentiality. CVE summarizes:

A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.

The weakness was shared 07/23/2021. The advisory is shared for download at savannah.nongnu.org. This vulnerability was named CVE-2020-22284 since 08/13/2020. The exploitation appears to be easy. Access to the local network is required for this attack. The requirement for exploitation is a single authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/27/2021).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Vendor

Name

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: 🔍

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Vector Complexity Authentication Confidentiality Integrity Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Memory corruption
CWE: CWE-120
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒


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Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

08/13/2020 CVE assigned
07/23/2021 +344 days Advisory disclosed
07/23/2021 +0 days VulDB entry created
07/27/2021 +4 days VulDB last updateAdvisory: savannah.nongnu.org
Status: Not defined

CVE: CVE-2020-22284 (🔒)

Created: 07/23/2021 07:53
Updated: 07/27/2021 14:11
Changes: (2) source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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