CVE-2020-2099 (GCVE-0-2020-2099)
Vulnerability from cvelistv5 – Published: 2020-01-29 15:15 – Updated: 2024-08-04 07:01
VLAI
EPSS
VEX
Summary
Jenkins 2.213 and earlier, LTS 2.204.1 and earlier improperly reuses encryption key parameters in the Inbound TCP Agent Protocol/3, allowing unauthorized attackers with knowledge of agent names to obtain the connection secrets for those agents, which can be used to connect to Jenkins, impersonating those agents.
Severity
8.6 (High)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://jenkins.io/security/advisory/2020-01-29/#… | x_refsource_CONFIRM |
| http://www.openwall.com/lists/oss-security/2020/01/29/1 | mailing-listx_refsource_MLIST |
| https://access.redhat.com/errata/RHSA-2020:0681 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0683 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHBA-2020:0402 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHBA-2020:0675 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Jenkins project | Jenkins |
Affected:
unspecified , ≤ 2.213
(custom)
Affected: unspecified , ≤ LTS 2.204.1 (custom) |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T07:01:39.729Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682"
},
{
"name": "[oss-security] 20200129 Multiple vulnerabilities in Jenkins and Jenkins plugins",
"tags": [
"mailing-list",
"x_refsource_MLIST",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2020/01/29/1"
},
{
"name": "RHSA-2020:0681",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT",
"x_transferred"
],
"url": "https://access.redhat.com/errata/RHSA-2020:0681"
},
{
"name": "RHSA-2020:0683",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT",
"x_transferred"
],
"url": "https://access.redhat.com/errata/RHSA-2020:0683"
},
{
"name": "RHBA-2020:0402",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT",
"x_transferred"
],
"url": "https://access.redhat.com/errata/RHBA-2020:0402"
},
{
"name": "RHBA-2020:0675",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT",
"x_transferred"
],
"url": "https://access.redhat.com/errata/RHBA-2020:0675"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "Jenkins",
"vendor": "Jenkins project",
"versions": [
{
"lessThanOrEqual": "2.213",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "LTS 2.204.1",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Jenkins 2.213 and earlier, LTS 2.204.1 and earlier improperly reuses encryption key parameters in the Inbound TCP Agent Protocol/3, allowing unauthorized attackers with knowledge of agent names to obtain the connection secrets for those agents, which can be used to connect to Jenkins, impersonating those agents."
}
],
"providerMetadata": {
"dateUpdated": "2023-10-24T16:04:53.193Z",
"orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
"shortName": "jenkins"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682"
},
{
"name": "[oss-security] 20200129 Multiple vulnerabilities in Jenkins and Jenkins plugins",
"tags": [
"mailing-list",
"x_refsource_MLIST"
],
"url": "http://www.openwall.com/lists/oss-security/2020/01/29/1"
},
{
"name": "RHSA-2020:0681",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2020:0681"
},
{
"name": "RHSA-2020:0683",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2020:0683"
},
{
"name": "RHBA-2020:0402",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHBA-2020:0402"
},
{
"name": "RHBA-2020:0675",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHBA-2020:0675"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "jenkinsci-cert@googlegroups.com",
"ID": "CVE-2020-2099",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Jenkins",
"version": {
"version_data": [
{
"version_affected": "\u003c=",
"version_value": "2.213"
},
{
"version_affected": "\u003c=",
"version_value": "LTS 2.204.1"
}
]
}
}
]
},
"vendor_name": "Jenkins project"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Jenkins 2.213 and earlier, LTS 2.204.1 and earlier improperly reuses encryption key parameters in the Inbound TCP Agent Protocol/3, allowing unauthorized attackers with knowledge of agent names to obtain the connection secrets for those agents, which can be used to connect to Jenkins, impersonating those agents."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-323: Reusing a Nonce, Key Pair in Encryption"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682",
"refsource": "CONFIRM",
"url": "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682"
},
{
"name": "[oss-security] 20200129 Multiple vulnerabilities in Jenkins and Jenkins plugins",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/01/29/1"
},
{
"name": "RHSA-2020:0681",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2020:0681"
},
{
"name": "RHSA-2020:0683",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHSA-2020:0683"
},
{
"name": "RHBA-2020:0402",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHBA-2020:0402"
},
{
"name": "RHBA-2020:0675",
"refsource": "REDHAT",
"url": "https://access.redhat.com/errata/RHBA-2020:0675"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b",
"assignerShortName": "jenkins",
"cveId": "CVE-2020-2099",
"datePublished": "2020-01-29T15:15:27.000Z",
"dateReserved": "2019-12-05T00:00:00.000Z",
"dateUpdated": "2024-08-04T07:01:39.729Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-2099",
"date": "2026-10-07",
"epss": "0.01012",
"percentile": "0.62074"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "Jenkins",
"vendor": "Jenkins project",
"versions": [
{
"lessThanOrEqual": "2.213",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThanOrEqual": "LTS 2.204.1",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"source": "jenkinsci-cert@googlegroups.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*",
"matchCriteriaId": "EAACE161-BE2D-4BB8-9795-3D76F19433C1",
"versionEndIncluding": "2.204.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*",
"matchCriteriaId": "F0F83033-6C48-4AF2-BB2A-157A09D79538",
"versionEndIncluding": "2.218",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Jenkins 2.213 and earlier, LTS 2.204.1 and earlier improperly reuses encryption key parameters in the Inbound TCP Agent Protocol/3, allowing unauthorized attackers with knowledge of agent names to obtain the connection secrets for those agents, which can be used to connect to Jenkins, impersonating those agents."
},
{
"lang": "es",
"value": "Jenkins versiones 2.213 y anteriores, versiones LTS 2.204.1 y anteriores, reutilizan inapropiadamente los par\u00e1metros de clave de cifrado en el Inbound TCP Agent Protocol/3, permitiendo a atacantes no autorizados con conocimiento de los nombres de los agentes obtener los secretos de conexi\u00f3n para esos agentes, que pueden ser usados para conectar con Jenkins , haci\u00e9ndose pasar por esos agentes."
}
],
"id": "CVE-2020-2099",
"lastModified": "2026-06-17T03:11:45.247",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 4.7,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2020-01-29T16:15:12.037",
"references": [
{
"source": "jenkinsci-cert@googlegroups.com",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2020/01/29/1"
},
{
"source": "jenkinsci-cert@googlegroups.com",
"url": "https://access.redhat.com/errata/RHBA-2020:0402"
},
{
"source": "jenkinsci-cert@googlegroups.com",
"url": "https://access.redhat.com/errata/RHBA-2020:0675"
},
{
"source": "jenkinsci-cert@googlegroups.com",
"url": "https://access.redhat.com/errata/RHSA-2020:0681"
},
{
"source": "jenkinsci-cert@googlegroups.com",
"url": "https://access.redhat.com/errata/RHSA-2020:0683"
},
{
"source": "jenkinsci-cert@googlegroups.com",
"tags": [
"Vendor Advisory"
],
"url": "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2020/01/29/1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHBA-2020:0402"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHBA-2020:0675"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHSA-2020:0681"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://access.redhat.com/errata/RHSA-2020:0683"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682"
}
],
"sourceIdentifier": "jenkinsci-cert@googlegroups.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-330"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-06-26T21:59:27+00:00",
"cve": "CVE-2020-2099",
"id": "CVE-2020-2099",
"initial_release_date": "2020-01-29T00:00:00+00:00",
"product_status:fixed": "89",
"product_status:known_not_affected": "60",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "jenkins: Inbound TCP Agent Protocol/3 authentication bypass",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-2099.json",
"version": "3"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…