CVE-2020-35510 (GCVE-0-2020-35510)
Vulnerability from cvelistv5 – Published: 2021-06-02 13:22 – Updated: 2024-08-04 17:02
VLAI
EPSS
VEX
Summary
A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Severity
5.9 (Medium)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1905796 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| n/a | jboss-remoting |
Affected:
jboss-remoting 5.0.20.SP1-redhat-00001
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T17:02:08.052Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "jboss-remoting",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "jboss-remoting 5.0.20.SP1-redhat-00001"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-06-02T13:22:16.000Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2020-35510",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "jboss-remoting",
"version": {
"version_data": [
{
"version_value": "jboss-remoting 5.0.20.SP1-redhat-00001"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-400"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796",
"refsource": "MISC",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2020-35510",
"datePublished": "2021-06-02T13:22:16.000Z",
"dateReserved": "2020-12-17T00:00:00.000Z",
"dateUpdated": "2024-08-04T17:02:08.052Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-35510",
"date": "2026-09-24",
"epss": "0.01089",
"percentile": "0.63875"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:jboss-remoting:*:*:*:*:*:*:*:*",
"matchCriteriaId": "62C98CF3-35A8-42CA-974F-C6232DA0BD5D",
"versionEndExcluding": "5.0.20",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:jboss-remoting:5.0.20:-:*:*:*:*:*:*",
"matchCriteriaId": "415F273E-9CBD-4266-8D2D-02C21A753C8A",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability."
},
{
"lang": "es",
"value": "Se ha encontrado un fallo en jboss-remoting en versiones anteriores a 5.0.20.SP1-redhat-00001. Un atacante malicioso podr\u00eda causar que los hilos (subprocesos) se quedaran detenidos para siempre en el servidor EJB al escribir una secuencia de bytes correspondientes a los mensajes esperados de una petici\u00f3n de cliente EJB con \u00e9xito, pero omitiendo los mensajes ACK, o simplemente manipulando el c\u00f3digo de jboss-remoting, borrando las l\u00edneas que env\u00edan el mensaje ACK del c\u00f3digo del cliente EJB, resultando en una Denegaci\u00f3n de Servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"
}
],
"id": "CVE-2020-35510",
"lastModified": "2024-11-21T05:27:27.853",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-06-02T14:15:09.393",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "secalert@redhat.com",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:jboss-remoting:*:*:*:*:*:*:*:*",
"matchCriteriaId": "62C98CF3-35A8-42CA-974F-C6232DA0BD5D",
"versionEndExcluding": "5.0.20",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:jboss-remoting:5.0.20:-:*:*:*:*:*:*",
"matchCriteriaId": "415F273E-9CBD-4266-8D2D-02C21A753C8A",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in jboss-remoting in versions before 5.0.20.SP1-redhat-00001. A malicious attacker could cause threads to hold up forever in the EJB server by writing a sequence of bytes corresponding to the expected messages of a successful EJB client request, but omitting the ACK messages, or just tamper with jboss-remoting code, deleting the lines that send the ACK message from the EJB client code resulting in a denial of service. The highest threat from this vulnerability is to system availability."
},
{
"lang": "es",
"value": "Se ha encontrado un fallo en jboss-remoting en versiones anteriores a 5.0.20.SP1-redhat-00001. Un atacante malicioso podr\u00eda causar que los hilos (subprocesos) se quedaran detenidos para siempre en el servidor EJB al escribir una secuencia de bytes correspondientes a los mensajes esperados de una petici\u00f3n de cliente EJB con \u00e9xito, pero omitiendo los mensajes ACK, o simplemente manipulando el c\u00f3digo de jboss-remoting, borrando las l\u00edneas que env\u00edan el mensaje ACK del c\u00f3digo del cliente EJB, resultando en una Denegaci\u00f3n de Servicio. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema"
}
],
"id": "CVE-2020-35510",
"lastModified": "2024-11-21T05:27:27.853",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-06-02T14:15:09.393",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905796"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "secalert@redhat.com",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-07T14:19:50+00:00",
"cve": "CVE-2020-35510",
"id": "CVE-2020-35510",
"initial_release_date": "2020-12-09T00:00:00+00:00",
"product_status:fixed": "294",
"product_status:known_affected": "13",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "jboss-remoting: Threads hold up forever in the EJB server by suppressing the ack from an EJB client",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-35510.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…