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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2020-17525

Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-17525
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 04:26 UTC · Revision 1

Source evidence

CVE-2020-17525

core-osv · Original source

Published 17 Mar 2021, 10:15 UTC

Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7

osv:CVE-2020-17525
Complete source record
{
  "id": "b7a81bb59652f3367ebefd0b1f3a30f800bfa48052cf9cf64798c01db9e97b75",
  "url": "https://osv.dev/vulnerability/CVE-2020-17525",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-17525",
    "summary": "Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7",
    "evidence": "osv:CVE-2020-17525",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-17525",
      "aliases": [
        "BIT-subversion-2020-17525",
        "CVE-2020-17525"
      ],
      "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/apache/subversion",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d5c449a05c043ec247cb68cb2bbb891779eb8566"
                },
                {
                  "fixed": "789e63d1f431ca38dffa1e91bd2230daf361bfb4"
                },
                {
                  "introduced": "f6bc87d00259140249e8ff672b2913ab24ebdf86"
                },
                {
                  "fixed": "209825a473d8fe106e52c6082d1c363f06109d2b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:subversion:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.9.0"
                      },
                      {
                        "fixed": "1.10.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:subversion:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.11.0"
                      },
                      {
                        "fixed": "1.14.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-17525.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:18.376525786Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2021/05/msg00000.html",
        "https://subversion.apache.org/security/CVE-2020-17525-advisory.txt"
      ],
      "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-2020-17525",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429759,
  "published_at": "2021-03-17T10:15:11.873+00:00"
}