CVE-2021-42010 (GCVE-0-2021-42010)
Vulnerability from cvelistv5 – Published: 2022-10-24 00:00 – Updated: 2025-05-07 15:53
VLAI
EPSS
VEX
Title
CRLF log injection
Summary
Heron versions <= 0.20.4-incubating allows CRLF log injection because of the lack of escaping in the log statements. Please update to version 0.20.5-incubating which addresses this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-07 15:52 UTC
CWE
- CRLF Injection
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Apache Software Foundation | Apache Heron (Incubating) |
Affected:
Apache Heron 0.20.4-incubating , ≤ 0.20.4-incubating
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T03:22:25.639Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
},
{
"name": "[oss-security] 20221023 CVE-2021-42010: Apache Heron (Incubating): CRLF log injection",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-42010",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-07T15:52:58.634009Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-116",
"description": "CWE-116 Improper Encoding or Escaping of Output",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-05-07T15:53:35.603Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Apache Heron (Incubating)",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThanOrEqual": "0.20.4-incubating",
"status": "affected",
"version": "Apache Heron 0.20.4-incubating",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "The Apache Heron (Incubating) project would like to thank Bo Yu for bringing this matter to our attention."
}
],
"descriptions": [
{
"lang": "en",
"value": "Heron versions \u003c= 0.20.4-incubating allows CRLF log injection because of the lack of escaping in the log statements. Please update to version 0.20.5-incubating which addresses this issue."
}
],
"metrics": [
{
"other": {
"content": {
"other": "low"
},
"type": "unknown"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CRLF Injection",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-10-24T00:00:00.000Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
},
{
"name": "[oss-security] 20221023 CVE-2021-42010: Apache Heron (Incubating): CRLF log injection",
"tags": [
"mailing-list"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "CRLF log injection",
"x_generator": {
"engine": "Vulnogram 0.0.9"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2021-42010",
"datePublished": "2022-10-24T00:00:00.000Z",
"dateReserved": "2021-10-05T00:00:00.000Z",
"dateUpdated": "2025-05-07T15:53:35.603Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-42010",
"date": "2026-10-10",
"epss": "0.01585",
"percentile": "0.74886"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:apache:heron:*:*:*:*:*:*:*:*",
"matchCriteriaId": "85ECA43A-C7ED-474A-B835-0993EDFA7656",
"versionEndExcluding": "0.20.5-incubating",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Heron versions \u003c= 0.20.4-incubating allows CRLF log injection because of the lack of escaping in the log statements. Please update to version 0.20.5-incubating which addresses this issue."
},
{
"lang": "es",
"value": "Heron versiones anteriores a 0.20.4-incubating incluy\u00e9ndola, permiten una inyecci\u00f3n de registros CRLF debido a una falta de escape en las declaraciones de registro. Por favor, actualice a versi\u00f3n 0.20.5-incubating que aborda este problema"
}
],
"id": "CVE-2021-42010",
"lastModified": "2024-11-21T06:27:03.907",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2022-10-24T14:15:49.560",
"references": [
{
"source": "security@apache.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
},
{
"source": "security@apache.org",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
}
],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-116"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "Apache Heron (Incubating)",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThanOrEqual": "0.20.4-incubating",
"status": "affected",
"version": "Apache Heron 0.20.4-incubating",
"versionType": "custom"
}
]
}
],
"source": "security@apache.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:apache:heron:*:*:*:*:*:*:*:*",
"matchCriteriaId": "85ECA43A-C7ED-474A-B835-0993EDFA7656",
"versionEndExcluding": "0.20.5-incubating",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Heron versions \u003c= 0.20.4-incubating allows CRLF log injection because of the lack of escaping in the log statements. Please update to version 0.20.5-incubating which addresses this issue."
},
{
"lang": "es",
"value": "Heron versiones anteriores a 0.20.4-incubating incluy\u00e9ndola, permiten una inyecci\u00f3n de registros CRLF debido a una falta de escape en las declaraciones de registro. Por favor, actualice a versi\u00f3n 0.20.5-incubating que aborda este problema"
}
],
"id": "CVE-2021-42010",
"lastModified": "2026-06-17T04:09:08.840",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-42010",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-07T15:52:58.634009Z",
"version": "2.0.3"
}
}
]
},
"published": "2022-10-24T14:15:49.560",
"references": [
{
"source": "security@apache.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
},
{
"source": "security@apache.org",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
}
],
"sourceIdentifier": "security@apache.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-116"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-116"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-05-29T03:44:08+00:00",
"cve": "CVE-2021-42010",
"id": "CVE-2021-42010",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "CRLF log injection",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-42010.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T03:22:25.639Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
},
{
"name": "[oss-security] 20221023 CVE-2021-42010: Apache Heron (Incubating): CRLF log injection",
"tags": [
"mailing-list",
"x_transferred"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-42010",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-07T15:52:58.634009Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-116",
"description": "CWE-116 Improper Encoding or Escaping of Output",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-05-07T15:53:17.957Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Apache Heron (Incubating)",
"vendor": "Apache Software Foundation",
"versions": [
{
"lessThanOrEqual": "0.20.4-incubating",
"status": "affected",
"version": "Apache Heron 0.20.4-incubating",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "The Apache Heron (Incubating) project would like to thank Bo Yu for bringing this matter to our attention."
}
],
"descriptions": [
{
"lang": "en",
"value": "Heron versions \u003c= 0.20.4-incubating allows CRLF log injection because of the lack of escaping in the log statements. Please update to version 0.20.5-incubating which addresses this issue."
}
],
"metrics": [
{
"other": {
"content": {
"other": "low"
},
"type": "unknown"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CRLF Injection",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-10-24T00:00:00.000Z",
"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"shortName": "apache"
},
"references": [
{
"url": "https://lists.apache.org/thread/j65nwr8n7jchngwqptzh100drcr4ry2q"
},
{
"name": "[oss-security] 20221023 CVE-2021-42010: Apache Heron (Incubating): CRLF log injection",
"tags": [
"mailing-list"
],
"url": "http://www.openwall.com/lists/oss-security/2022/10/23/2"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "CRLF log injection",
"x_generator": {
"engine": "Vulnogram 0.0.9"
}
}
},
"cveMetadata": {
"assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
"assignerShortName": "apache",
"cveId": "CVE-2021-42010",
"datePublished": "2022-10-24T00:00:00.000Z",
"dateReserved": "2021-10-05T00:00:00.000Z",
"dateUpdated": "2025-05-07T15:53:35.603Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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…