{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "low"
      },
      "package": {
        "ecosystem": "Debian:11",
        "name": "fail2ban"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.4+svn20110323-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "low"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "fail2ban"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.4+svn20110323-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "low"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "fail2ban"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.4+svn20110323-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "low"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "fail2ban"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.4+svn20110323-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The (1) dshield.conf, (2) mail-buffered.conf, (3) mynetwatchman.conf, and (4) mynetwatchman.conf actions in action.d/ in Fail2ban before 0.8.5 allows local users to write to arbitrary files via a symlink attack on temporary files with predictable names, as demonstrated by /tmp/fail2ban-mail.txt.",
  "id": "DEBIAN-CVE-2009-5023",
  "modified": "2026-04-28T19:53:24.399652239Z",
  "published": "2014-06-10T14:55:08.757Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2009-5023"
    }
  ],
  "upstream": [
    "CVE-2009-5023"
  ]
}