CVE-2023-42795 (GCVE-0-2023-42795)

Vulnerability from cvelistv5 – Published: 2023-10-10 17:42 – Updated: 2025-10-29 12:02
VLAI
Title
Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests
Summary
Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.0-M11 (semver)
Affected: 10.1.0-M1 , ≤ 10.1.13 (semver)
Affected: 9.0.0-M1 , ≤ 9.0.80 (semver)
Affected: 8.5.0 , ≤ 8.5.93 (semver)
Unknown: 3 , < 8.5.0 (semver)
Unknown: 10.0.0-M1 , ≤ 10.0.27 (semver)
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could \\ncause Tomcat to skip some parts of the recycling process leading to \\ninformation leaking from the current request/response to the next.\\n\\nUsers are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.\\n\\n\"}, {\"lang\": \"es\", \"value\": \"Vulnerabilidad de limpieza incompleta en Apache Tomcat. Al reciclar varios objetos internos en Apache Tomcat desde 11.0.0-M1 hasta 11.0.0-M11, desde 10.1.0-M1 hasta 10.1.13, desde 9.0.0-M1 hasta 9.0.80 y Desde 8.5.0 hasta 8.5.93, un error podr\\u00eda hacer que Tomcat se salte algunas partes del proceso de reciclaje, lo que provocar\\u00eda que se filtrara informaci\\u00f3n de la solicitud/respuesta actual a la siguiente. Se recomienda a los usuarios actualizar a la versi\\u00f3n 11.0.0-M12 en adelante, 10.1.14 en adelante, 9.0.81 en adelante o 8.5.94 en adelante, lo que soluciona el problema.\"}]",
      "id": "CVE-2023-42795",
      "lastModified": "2024-11-21T08:23:10.213",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}]}",
      "published": "2023-10-10T18:15:18.933",
      "references": "[{\"url\": \"http://www.openwall.com/lists/oss-security/2023/10/10/9\", \"source\": \"security@apache.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.apache.org/thread/065jfyo583490r9j2v73nhpyxdob56lw\", \"source\": \"security@apache.org\", \"tags\": [\"Mailing List\", \"Vendor Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html\", \"source\": \"security@apache.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20231103-0007/\", \"source\": \"security@apache.org\"}, {\"url\": \"https://www.debian.org/security/2023/dsa-5521\", \"source\": \"security@apache.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2023/dsa-5522\", \"source\": \"security@apache.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2023/10/10/9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.apache.org/thread/065jfyo583490r9j2v73nhpyxdob56lw\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Vendor Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20231103-0007/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://www.debian.org/security/2023/dsa-5521\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2023/dsa-5522\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "security@apache.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"security@apache.org\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-459\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-42795\",\"sourceIdentifier\":\"security@apache.org\",\"published\":\"2023-10-10T18:15:18.933\",\"lastModified\":\"2025-08-07T11:15:27.710\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could \\ncause Tomcat to skip some parts of the recycling process leading to \\ninformation leaking from the current request/response to the next.\\nOlder, EOL versions may\u00a0also be affected.\\n\\n\\nUsers are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.\"},{\"lang\":\"es\",\"value\":\"Vulnerabilidad de limpieza incompleta en Apache Tomcat. 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Tags
Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.