ghsa-h8q5-g2cj-qr5h
Vulnerability from github
Published
2018-10-17 15:43
Modified
2022-04-26 21:46
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Apache Tika is vulnerable to entity expansions which can lead to a denial of service attack
Details

In Apache Tika 1.19 (CVE-2018-11761), we added an entity expansion limit for XML parsing. However, Tika reuses SAXParsers and calls reset() after each parse, which, for Xerces2 parsers, as per the documentation, removes the user-specified SecurityManager and thus removes entity expansion limits after the first parse. Apache Tika versions from 0.1 to 1.19 are therefore still vulnerable to entity expansions which can lead to a denial of service attack. Users should upgrade to 1.19.1 or later.

Show details on source website

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.tika:tika-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.1"
            },
            {
              "fixed": "1.19.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2018-11796"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-611"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:39:33Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "In Apache Tika 1.19 (CVE-2018-11761), we added an entity expansion limit for XML parsing. However, Tika reuses SAXParsers and calls reset() after each parse, which, for Xerces2 parsers, as per the documentation, removes the user-specified SecurityManager and thus removes entity expansion limits after the first parse. Apache Tika versions from 0.1 to 1.19 are therefore still vulnerable to entity expansions which can lead to a denial of service attack. Users should upgrade to 1.19.1 or later.",
  "id": "GHSA-h8q5-g2cj-qr5h",
  "modified": "2022-04-26T21:46:04Z",
  "published": "2018-10-17T15:43:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-11796"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:3892"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-h8q5-g2cj-qr5h"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/tika"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/88de8350cda9b184888ec294c813c5bd8a2081de8fd3666f8904bc05@%3Cdev.tika.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20190903-0002"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/105585"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache Tika is vulnerable to entity expansions which can lead to a denial of service attack"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.