Heap-based buffer overflow in the proxy_connect function in src/client

{
  "id": "d210e871788b96740f6a9958ffa0b68050f836a021a5b06c907cf4bb82844b36",
  "url": "https://osv.dev/vulnerability/CLEANSTART-2023-RT70997",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-based buffer overflow in the proxy_connect function in src/client",
    "summary": "Security vulnerability affects the cvs package. Heap-based buffer overflow in the proxy_connect function in src/client.",
    "evidence": "osv:CLEANSTART-2023-RT70997",
    "products": [
      {
        "name": {
          "value": "cvs",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.12.12-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLEANSTART-2023-RT70997",
      "aliases": [
        "CLEANSTART-2023-RT70997"
      ],
      "metrics": [
        {
          "type": "CVSS_V2",
          "score": "AV:N/AC:L/Au:N/C:C/I:C/A:C"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.12.12-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "cvs",
            "purl": "pkg:apk/cleanstart/cvs",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2023/CLEANSTART-2023-RT70997.json"
          }
        }
      ],
      "modified": "2026-10-08T16:46:29.231486467Z",
      "provider": "osv",
      "upstream": [
        "CVE-2012-0804"
      ],
      "references": [
        "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2023/CLEANSTART-2023-RT70997.json",
        "https://osv.dev/vulnerability/CVE-2012-0804",
        "https://nvd.nist.gov/vuln/detail/CVE-2012-0804"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2012-0804",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 100487,
  "published_at": "2026-09-30T20:47:19.876+00:00"
}