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Medium

Security advisory

Type: advisorySources: OSVCVE: CVE-2018-20534

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

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2018-20534
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 10:29 UTC · Revision 1

Source evidence

CVE-2018-20534

core-osv · Original source

Published 28 Dec 2018, 16:29 UTC

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

osv:CVE-2018-20534
Complete source record
{
  "id": "9078aa1c77bd615436544283bf3f7edd39b79dd80b21f9c7fb53c09bfaf44337",
  "url": "https://osv.dev/vulnerability/CVE-2018-20534",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-20534",
    "summary": "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",
    "evidence": "osv:CVE-2018-20534",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-20534",
      "aliases": [
        "CVE-2018-20534"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/opensuse/libsolv",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "1c0141962a9eef7f4bc1fdcac7099f3f6a95ec23"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:opensuse:libsolv:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.7.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.7.2",
            "0.7.1",
            "0.7.0",
            "0.6.35",
            "0.6.34",
            "0.6.33",
            "0.6.32",
            "0.6.31",
            "0.6.30",
            "0.6.29",
            "0.6.28",
            "0.6.27",
            "0.6.26",
            "0.6.25",
            "0.6.24",
            "0.6.23",
            "0.6.22",
            "0.6.21",
            "0.6.20",
            "0.6.19",
            "0.6.18",
            "0.6.17",
            "0.6.16",
            "0.6.15",
            "0.6.14",
            "0.6.13",
            "0.6.12",
            "0.6.11",
            "0.6.10",
            "0.6.9",
            "0.6.8",
            "0.6.7",
            "0.6.6",
            "0.6.5",
            "0.6.4",
            "BASE-SuSE-Code-13_1-Branch",
            "BASE-SuSE-Code-12_3-Branch",
            "BASE-SuSE-Code-12_2-Branch",
            "BASE-SuSE-Code-12_1-Branch"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-20534.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:24.682157796Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/errata/RHSA-2019:2290",
        "https://access.redhat.com/errata/RHSA-2019:3583",
        "https://usn.ubuntu.com/3916-1/",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1652604",
        "https://bugzilla.suse.com/show_bug.cgi?id=1120631",
        "https://github.com/openSUSE/libsolv/pull/291"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "18.10"
                  },
                  {
                    "last_affected": "18.10"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-20534",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 381687,
  "published_at": "2018-12-28T16:29:04.33+00:00"
}