CVE-2020-26259 (GCVE-0-2020-26259)

Vulnerability from cvelistv5 – Published: 2020-12-16 01:05 – Updated: 2024-08-04 15:56
VLAI
Title
XStream is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling
Summary
XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.15, is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling. The vulnerability may allow a remote attacker to delete arbitrary know files on the host as log as the executing process has sufficient rights only by manipulating the processed input stream. If you rely on XStream's default blacklist of the Security Framework, you will have to use at least version 1.4.15. The reported vulnerability does not exist running Java 15 or higher. No user is affected, who followed the recommendation to setup XStream's Security Framework with a whitelist! Anyone relying on XStream's default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.14 or below who still want to use XStream default blacklist can use a workaround described in more detailed in the referenced advisories.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
CWE
  • CWE-78 - OS Command Injection
Assigner
References
Impacted products
Vendor Product Version
x-stream xstream Affected: < 1.4.15
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      "references": "[{\"url\": \"https://github.com/x-stream/xstream/security/advisories/GHSA-jfvx-7wrx-43fh\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Mitigation\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.apache.org/thread.html/r97993e3d78e1f5389b7b172ba9f308440830ce5f051ee62714a0aa34%40%3Ccommits.struts.apache.org%3E\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/12/msg00042.html\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210409-0005/\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2021/dsa-4828\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://x-stream.github.io/CVE-2020-26259.html\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Exploit\", \"Mitigation\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/x-stream/xstream/security/advisories/GHSA-jfvx-7wrx-43fh\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mitigation\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.apache.org/thread.html/r97993e3d78e1f5389b7b172ba9f308440830ce5f051ee62714a0aa34%40%3Ccommits.struts.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2020/12/msg00042.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22KVR6B5IZP3BGQ3HPWIO2FWWCKT3DHP/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PVPHZA7VW2RRSDCOIPP2W6O5ND254TU7/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGXIU3YDPG6OGTDHMBLAFN7BPBERXREB/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20210409-0005/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2021/dsa-4828\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://x-stream.github.io/CVE-2020-26259.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Mitigation\", \"Third Party Advisory\"]}]",
      "sourceIdentifier": "security-advisories@github.com",
      "vulnStatus": "Modified",
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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-26259\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2020-12-16T01:15:12.413\",\"lastModified\":\"2025-05-23T16:54:02.297\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.15, is vulnerable to an Arbitrary File Deletion on the local host when unmarshalling. The vulnerability may allow a remote attacker to delete arbitrary know files on the host as log as the executing process has sufficient rights only by manipulating the processed input stream. If you rely on XStream\u0027s default blacklist of the Security Framework, you will have to use at least version 1.4.15. The reported vulnerability does not exist running Java 15 or higher. No user is affected, who followed the recommendation to setup XStream\u0027s Security Framework with a whitelist! Anyone relying on XStream\u0027s default blacklist can immediately switch to a whilelist for the allowed types to avoid the vulnerability. Users of XStream 1.4.14 or below who still want to use XStream default blacklist can use a workaround described in more detailed in the referenced advisories.\"},{\"lang\":\"es\",\"value\":\"XStream es una biblioteca de Java para serializar objetos a XML y viceversa.\u0026#xa0;En XStream versiones anteriores a 1.4.15, es vulnerable a una Eliminaci\u00f3n Arbitraria de Archivos en el host local al desagrupar.\u0026#xa0;La vulnerabilidad puede permitir a un atacante remoto eliminar archivos conocidos arbitrarios en el host como registro, ya que el proceso en ejecuci\u00f3n posee derechos suficientes solo mediante la manipulaci\u00f3n del flujo de entrada procesado.\u0026#xa0;Si conf\u00eda en la lista negra predeterminada de XStream del Security Framework, tendr\u00e1 que usar al menos la versi\u00f3n 1.4.15.\u0026#xa0;La vulnerabilidad reportada no se presenta al ejecutar Java versi\u00f3n 15 o superior.\u0026#xa0;Ning\u00fan usuario est\u00e1 afectado, si sigui\u00f3 la 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  }
}


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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.