ubuntu-cve-2020-37182
Vulnerability from osv_ubuntu
Published
2026-02-11 21:16
Modified
2026-05-20 14:52
Summary
Details

Redir 3.3 contains a stack overflow vulnerability in the doproxyconnect() function that allows attackers to crash the application by sending oversized input. Attackers can exploit the sprintf() buffer without proper length checking to overwrite memory and cause a segmentation fault, resulting in program termination.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
N/A (UNKNOWN)
high
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redir",
            "binary_version": "2.2.1-13"
          }
        ],
        "priority_reason": "A remote attacker can potentially cause a denial of service"
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "redir",
        "purl": "pkg:deb/ubuntu/redir@2.2.1-13?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1-13"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redir",
            "binary_version": "3.1-1"
          }
        ],
        "priority_reason": "A remote attacker can potentially cause a denial of service"
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "redir",
        "purl": "pkg:deb/ubuntu/redir@3.1-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redir",
            "binary_version": "3.2-1"
          }
        ],
        "priority_reason": "A remote attacker can potentially cause a denial of service"
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "redir",
        "purl": "pkg:deb/ubuntu/redir@3.2-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redir",
            "binary_version": "3.3-1"
          }
        ],
        "priority_reason": "A remote attacker can potentially cause a denial of service"
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "redir",
        "purl": "pkg:deb/ubuntu/redir@3.3-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redir",
            "binary_version": "3.3-1"
          }
        ],
        "priority_reason": "A remote attacker can potentially cause a denial of service"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "redir",
        "purl": "pkg:deb/ubuntu/redir@3.3-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redir",
            "binary_version": "3.3-1"
          }
        ],
        "priority_reason": "A remote attacker can potentially cause a denial of service"
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "redir",
        "purl": "pkg:deb/ubuntu/redir@3.3-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "redir",
            "binary_version": "3.3-1build1"
          }
        ],
        "priority_reason": "A remote attacker can potentially cause a denial of service"
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "redir",
        "purl": "pkg:deb/ubuntu/redir@3.3-1build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3-1",
        "3.3-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Redir 3.3 contains a stack overflow vulnerability in the doproxyconnect() function that allows attackers to crash the application by sending oversized input. Attackers can exploit the sprintf() buffer without proper length checking to overwrite memory and cause a segmentation fault, resulting in program termination.",
  "id": "UBUNTU-CVE-2020-37182",
  "modified": "2026-05-20T14:52:44Z",
  "published": "2026-02-11T21:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-37182"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-37182"
    },
    {
      "type": "REPORT",
      "url": "https://www.exploit-db.com/exploits/47919"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/troglobit/redir"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/redir-denial-of-service"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "high",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-37182"
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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