CVE-2021-43826
CVSS V2 Medium 4.3
CVSS V3 High 7.5
Description
Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions of Envoy a crash occurs when configured for :ref:`upstream tunneling <envoy_v3_api_field_extensions.filters.network.tcp_proxy.v3.TcpProxy.tunneling_config>` and the downstream connection disconnects while the the upstream connection or http/2 stream is still being established. There are no workarounds for this issue. Users are advised to upgrade.
Overview
- CVE ID
- CVE-2021-43826
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-02-22T23:15:10
- Last Modified Date
- 2022-03-02T15:23:00
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | 1 | OR | 1.18.6 | |
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | 1 | OR | 1.19.0 | 1.19.3 |
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | 1 | OR | 1.20.0 | 1.20.2 |
| cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:* | 1 | OR | 1.21.0 | 1.21.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/envoyproxy/envoy/security/advisories/GHSA-cmx3-fvgf-83mf | Issue Tracking Third Party Advisory |
| https://github.com/envoyproxy/envoy/commit/ce0ae309057a216aba031aff81c445c90c6ef145 | Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-43826 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43826 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:47:38 | Added to TrackCVE | |||
| 2022-12-06 10:31:56 | 2022-02-22T23:15Z | 2022-02-22T23:15:10 | CVE Published Date | updated |
| 2022-12-06 10:31:56 | 2022-03-02T15:23:00 | CVE Modified Date | updated | |
| 2022-12-06 10:31:56 | Analyzed | Vulnerability Status | updated |