ubuntu-cve-2018-20534
Vulnerability from osv_ubuntu
Published
2018-12-28 00:00
Modified
2026-04-22 07:38
Summary
Details

There is an illegal address access at ext/testcase.c in libsolv.a in libsolv through 0.7.2 that will cause a denial of service. NOTE: third parties dispute this issue stating that the issue affects the test suite and not the underlying library. It cannot be exploited in any real-world application

Severity
6.5 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libsolv-perl",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libsolv-tools",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libsolv0",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libsolvext0",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python-solv",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-solv",
            "binary_version": "0.6.11-1.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libsolv",
        "purl": "pkg:deb/ubuntu/libsolv@0.6.11-1.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.11-1.1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.11-1",
        "0.6.11-1build1",
        "0.6.11-1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libsolv-perl",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libsolv-tools",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libsolv0",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "libsolvext0",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python-solv",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-solv",
            "binary_version": "0.6.30-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libsolv",
        "purl": "pkg:deb/ubuntu/libsolv@0.6.30-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.30-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.28-2build1",
        "0.6.30-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "There is an illegal address access at ext/testcase.c in libsolv.a in libsolv through 0.7.2 that will cause a denial of service. NOTE: third parties dispute this issue stating that the issue affects the test suite and not the underlying library. It cannot be exploited in any real-world application",
  "id": "UBUNTU-CVE-2018-20534",
  "modified": "2026-04-22T07:38:47Z",
  "published": "2018-12-28T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-20534"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1652604"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/openSUSE/libsolv/pull/291"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3916-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4851-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-20534"
    }
  ],
  "related": [
    "USN-3916-1",
    "USN-4851-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-20534"
  ]
}



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Sightings

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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.
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  • 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.