CVE-2021-21696
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not limit agent read/write access to the libs/ directory inside build directories when using the FilePath APIs, allowing attackers in control of agent processes to replace the code of a trusted library with a modified variant. This results in unsandboxed code execution in the Jenkins controller process.
Overview
- CVE ID
- CVE-2021-21696
- Assigner
- jenkinsci-cert@googlegroups.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-11-04T17:15:08
- Last Modified Date
- 2021-11-08T17:33:05
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* | 1 | OR | 2.303.2 | |
| cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* | 1 | OR | 2.318 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2423 | Mitigation Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2021/11/04/3 | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-21696 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21696 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:47:59 | Added to TrackCVE | |||
| 2022-12-05 13:52:09 | 2021-11-04T17:15Z | 2021-11-04T17:15:08 | CVE Published Date | updated |
| 2022-12-05 13:52:09 | 2021-11-08T17:33:05 | CVE Modified Date | updated | |
| 2022-12-05 13:52:09 | Analyzed | Vulnerability Status | updated |