CVE-2021-43795
CVSS V2 Medium 5
CVSS V3 High 7.5
Description
Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server's local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria's path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.
Overview
- CVE ID
- CVE-2021-43795
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-02T18:15:08
- Last Modified Date
- 2021-12-06T18:24:45
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:linecorp:armeria:*:*:*:*:*:*:*:* | 1 | OR | 1.13.4 |
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://github.com/line/armeria/pull/3855 | Third Party Advisory |
| https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284 | Patch Third Party Advisory |
| https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-43795 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43795 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:42:55 | Added to TrackCVE | |||
| 2022-12-05 15:26:00 | 2021-12-02T18:15Z | 2021-12-02T18:15:08 | CVE Published Date | updated |
| 2022-12-05 15:26:00 | 2021-12-06T18:24:45 | CVE Modified Date | updated | |
| 2022-12-05 15:26:00 | Analyzed | Vulnerability Status | updated |