ubuntu-cve-2019-18197
Vulnerability from osv_ubuntu
Published
2019-10-18 21:15
Modified
2026-05-29 17:45
Summary
Details

In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.28-2ubuntu0.2+esm1"
          },
          {
            "binary_name": "python-libxslt1",
            "binary_version": "1.1.28-2ubuntu0.2+esm1"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.28-2ubuntu0.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.28-2ubuntu0.2+esm1?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.28-2ubuntu0.2+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.28-2",
        "1.1.28-2build1",
        "1.1.28-2ubuntu0.1",
        "1.1.28-2ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.28-2.1ubuntu0.3"
          },
          {
            "binary_name": "python-libxslt1",
            "binary_version": "1.1.28-2.1ubuntu0.3"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.28-2.1ubuntu0.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.28-2.1ubuntu0.3?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.28-2.1ubuntu0.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.28-2build2",
        "1.1.28-2.1",
        "1.1.28-2.1ubuntu0.1",
        "1.1.28-2.1ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.29-5ubuntu0.2"
          },
          {
            "binary_name": "python-libxslt1",
            "binary_version": "1.1.29-5ubuntu0.2"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.29-5ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.29-5ubuntu0.2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.29-5ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.29-2.1ubuntu1",
        "1.1.29-4",
        "1.1.29-5",
        "1.1.29-5ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn\u0027t reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.",
  "id": "UBUNTU-CVE-2019-18197",
  "modified": "2026-05-29T17:45:43Z",
  "published": "2019-10-18T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-18197"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4164-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-18197"
    }
  ],
  "related": [
    "USN-4164-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-18197"
  ]
}



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