Security advisory

{
  "id": "6bf10c00b484b82f23e154dfb1728536197e56bf1a10f3bb8a9e324e25e55065",
  "url": "https://osv.dev/vulnerability/CVE-2020-12658",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-12658",
    "summary": "gssproxy (aka gss-proxy) before 0.8.3 does not unlock cond_mutex before pthread exit in gp_worker_main() in gp_workers.c. NOTE: An upstream comment states \"We are already on a shutdown path when running the code in question, so a DoS there doesn't make any sense, and there has been no additional information provided us (as upstream) to indicate why this would be a problem.",
    "evidence": "osv:CVE-2020-12658",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-12658",
      "aliases": [
        "CVE-2020-12658"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gssapi/gssproxy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7b16d2387ae649698e8181c5888696ec8decc379"
                },
                {
                  "fixed": "cb761412e299ef907f22cd7c4146d50c8a792003"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gssproxy_project:gssproxy:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.8.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "cb761412e299ef907f22cd7c4146d50c8a792003"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.8.2",
            "v0.8.1",
            "v0.8.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-12658.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-12658-3dd5a1e2",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "54640710678816065676820337037606521400",
                    "135296166681145568386095559198534977615",
                    "94263839230411663761302891243876720687",
                    "236495842395608511330645660219638662377"
                  ]
                },
                "source": "https://github.com/gssapi/gssproxy/commit/cb761412e299ef907f22cd7c4146d50c8a792003",
                "target": {
                  "file": "src/gp_workers.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-12658-5a5b346d",
                "digest": {
                  "length": 1140,
                  "function_hash": "51459557422735618799701925522279373458"
                },
                "source": "https://github.com/gssapi/gssproxy/commit/cb761412e299ef907f22cd7c4146d50c8a792003",
                "target": {
                  "file": "src/gp_workers.c",
                  "function": "gp_worker_main"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:57:21Z"
          }
        }
      ],
      "modified": "2026-10-20T13:57:21.295679018Z",
      "provider": "osv",
      "references": [
        "https://github.com/gssapi/gssproxy/compare/v0.8.2...v0.8.3",
        "https://lists.debian.org/debian-lts-announce/2021/01/msg00004.html",
        "https://pagure.io/gssproxy/c/cb761412e299ef907f22cd7c4146d50c8a792003?branch=master",
        "https://github.com/gssapi/gssproxy/commit/cb761412e299ef907f22cd7c4146d50c8a792003"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-12658",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388447,
  "published_at": "2020-12-31T01:15:12.553+00:00"
}