Envoy Connect Request null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Envoy. This vulnerability affects unknown code of the component Connect Request Handler. Executing a manipulation can lead to null pointer dereference. This vulnerability is handled as CVE-2021-43824. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Envoy (affected version not known). This vulnerability affects some unknown functionality of the component Connect Request Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The weakness was released 02/23/2022 as GHSA-vj5m-rch8-5r2p. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-43824 since 11/16/2021. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability. Applying the patch 9371333230b1a6e1be2eccf4868771e11af6253a 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / 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: 🔍

Patch: 9371333230b1a6e1be2eccf4868771e11af6253a

Timelineinfo

11/16/2021 🔍
02/23/2022 +99 days 🔍
02/23/2022 +0 days 🔍
02/25/2022 +2 days 🔍

Sourcesinfo

Advisory: GHSA-vj5m-rch8-5r2p
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43824 (🔍)
GCVE (CVE): GCVE-0-2021-43824
GCVE (VulDB): GCVE-100-193636

Entryinfo

Created: 02/23/2022 07:52
Updated: 02/25/2022 14:42
Changes: 02/23/2022 07:52 (49), 02/25/2022 14:42 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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