CVE-2022-20620: Ssh agent Missing Permission Checks Vulnerability
MODERATECVE-2022-20620 is a MODERATE (CVSS 4.3) missing permission checks vulnerability (CWE-668: Exposure of Resource to Wrong Sphere) affecting Ssh agent libraries in the Maven ecosystem. The issue involves missing permission checks in ssh agent plugin allow enumerating credentials ids. Remediation is available by upgrading affected packages to version 1.23.2, 1.22.1.
CVE-2022-20620 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
How to Fix CVE-2022-20620
To remediate this vulnerability, upgrade all affected Ssh agent dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.jenkins-ci.plugins</groupId>
<artifactId>ssh-agent</artifactId>
<version>1.23.2</version>
</dependency><dependency>
<groupId>org.jenkins-ci.plugins</groupId>
<artifactId>ssh-agent</artifactId>
<version>1.22.1</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.jenkins-ci.pluginsHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2022-20620, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.jenkins-ci.pluginsAnalyze the terminal output to locate any version of Ssh agent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.23.2), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.jenkins-ci.plugins command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-668: Exposure of Resource to Wrong Sphere, where the product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource. In Ssh agent, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2022-20620 Affected Ssh agent Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.jenkins-ci.plugins:ssh-agent
|
Maven |
≥ 1.23
< 1.23.2
|
1.23.2
|
|
org.jenkins-ci.plugins:ssh-agent
|
Maven |
< 1.22.1
|
1.22.1
|
References
Frequently Asked Questions
What is CVE-2022-20620?
Which Ssh agent versions are affected?
What version fixes CVE-2022-20620?
Is ssh-agent affected?
What is the CVSS score of CVE-2022-20620?
What CWE is associated with CVE-2022-20620?
How can I check Maven dependencies for CVE-2022-20620?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-9wxh-jjj5-67cv",
"modified" : "2023-05-24T17:47:11Z",
"published" : "2022-01-13T00:00:58Z",
"aliases" : [ "CVE-2022-20620" ],
"summary" : "Missing permission checks in SSH Agent Plugin allow enumerating credentials IDs",
"details" : "Jenkins SSH Agent Plugin prior to 1.23.2 and 1.22.1 does not perform permission checks in several HTTP endpoints.\n\nThis allows attackers with Overall/Read access to enumerate credentials IDs of credentials stored in Jenkins. Those can be used as part of an attack to capture the credentials using another vulnerability.\n\nAn enumeration of credentials IDs in SSH Agent Plugin 1.23.2 and 1.22.1 requires the appropriate permissions.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.jenkins-ci.plugins:ssh-agent"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "1.23"
}, {
"fixed" : "1.23.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.jenkins-ci.plugins:ssh-agent"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.22.1"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-20620"
}, {
"type" : "WEB",
"url" : "https://github.com/jenkinsci/ssh-agent-plugin/commit/04f526d2f73a6fc24b59df20ba03d95265114835"
}, {
"type" : "WEB",
"url" : "https://github.com/jenkinsci/ssh-agent-plugin/commit/9c08b9f93cfb3ada0f0124f5bd7f0d027728a750"
}, {
"type" : "WEB",
"url" : "https://github.com/CVEProject/cvelist/blob/2d78eb36f4d084db7fb35f1535d8d84fdcb7d859/2022/20xxx/CVE-2022-20620.jsonhttps://github.com/CVEProject/cvelist/blob/2d78eb36f4d084db7fb35f1535d8d84fdcb7d859/2022/20xxx/CVE-2022-20620.json"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/jenkinsci/ssh-agent-plugin"
}, {
"type" : "WEB",
"url" : "https://www.jenkins.io/security/advisory/2022-01-12/#SECURITY-2189"
}, {
"type" : "WEB",
"url" : "http://www.openwall.com/lists/oss-security/2022/01/12/6"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-668", "CWE-862" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2022-07-27T21:24:04Z",
"nvd_published_at" : "2022-01-12T20:15:00Z"
}
}