Security advisory

{
  "id": "d56c89cca93df624cb28936f0f8cdf11aec79a1ac359f19482a5f91994d72ff7",
  "url": "https://osv.dev/vulnerability/CVE-2020-35573",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-35573",
    "summary": "srs2.c in PostSRSd before 1.10 allows remote attackers to cause a denial of service (CPU consumption) via a long timestamp tag in an SRS address.",
    "evidence": "osv:CVE-2020-35573",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-35573",
      "aliases": [
        "CVE-2020-35573"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/roehling/postsrsd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "544403b763486fef218a4cc6067ecb5ef2e24635"
                },
                {
                  "fixed": "4733fb11f6bec6524bb8518c5e1a699288c26bac"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:postsrsd_project:postsrsd:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.10"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4733fb11f6bec6524bb8518c5e1a699288c26bac"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.9",
            "1.8",
            "1.7",
            "1.6",
            "1.5",
            "1.4",
            "1.3",
            "1.2",
            "1.1",
            "1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-35573.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-35573-4c473993",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "289337015076634359955344847264667610945",
                    "258333214946563653037667618994653256138",
                    "233886238361932281857854205422456740988"
                  ]
                },
                "source": "https://github.com/roehling/postsrsd/commit/4733fb11f6bec6524bb8518c5e1a699288c26bac",
                "target": {
                  "file": "srs2.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-35573-788b8b7a",
                "digest": {
                  "length": 580,
                  "function_hash": "200941730823154787439090683899907719258"
                },
                "source": "https://github.com/roehling/postsrsd/commit/4733fb11f6bec6524bb8518c5e1a699288c26bac",
                "target": {
                  "file": "srs2.c",
                  "function": "srs_timestamp_check"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:00:23Z"
          }
        }
      ],
      "modified": "2026-10-20T14:00:23.121872767Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2020/12/msg00031.html",
        "https://security.gentoo.org/glsa/202107-08",
        "https://github.com/roehling/postsrsd/commit/4733fb11f6bec6524bb8518c5e1a699288c26bac"
      ],
      "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-2020-35573",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388506,
  "published_at": "2020-12-20T05:15:09.553+00:00"
}