CVE-2021-39156
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio’s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path.
Overview
- CVE ID
- CVE-2021-39156
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-08-24T23:15:10
- Last Modified Date
- 2022-08-12T18:01:20
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* | 1 | OR | 1.9.8 | |
| cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* | 1 | OR | 1.10.0 | 1.10.3 |
| cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* | 1 | OR | 1.11.0 | 1.11.1 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 5
- Severity
- MEDIUM
- Exploitability Score
- 10
- 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:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://istio.io/latest/news/security/istio-security-2021-008 | Vendor Advisory |
| https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-39156 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39156 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:55:30 | Added to TrackCVE | |||
| 2022-12-05 09:02:25 | 2021-08-24T23:15Z | 2021-08-24T23:15:10 | CVE Published Date | updated |
| 2022-12-05 09:02:25 | 2022-08-12T18:01:20 | CVE Modified Date | updated | |
| 2022-12-05 09:02:25 | Analyzed | Vulnerability Status | updated |