Skip to content
Heist/ feed
Back to feed
High

redir — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2020-37182

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.

Products
redir
Affected versions
2.2.1-13, 3.1-1, 3.2-1, 3.3-1, 3.3-1build1
Fixed versions
Not specified
CVEs
CVE-2020-37182
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 00:52 UTC · Revision 1

Source evidence

UBUNTU-CVE-2020-37182

core-osv · Original source

Published 11 Feb 2026, 21:16 UTC

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.

osv:UBUNTU-CVE-2020-37182

redir

Fixed versions: Not specified

redir

Fixed versions: Not specified

redir

Fixed versions: Not specified

redir

Fixed versions: Not specified

redir

Fixed versions: Not specified

redir

Fixed versions: Not specified

redir

Fixed versions: Not specified

redir

Fixed versions: Not specified

Complete source record
{
  "id": "9145a2f882177a8bbbc1cbe45266a0281e4eb29d2bdad844065d505166dd265b",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-37182",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2020-37182",
    "summary": "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.",
    "evidence": "osv:UBUNTU-CVE-2020-37182",
    "products": [
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.2.1-13",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.1-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.2-1",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.3-1",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.3-1",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.3-1",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.3-1build1",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
          "value": "redir",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.3-1",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "3.3-1build1",
            "evidence": "/affected/7/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2020-37182",
      "aliases": [
        "UBUNTU-CVE-2020-37182"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "CVSS_V4",
          "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": "Ubuntu",
          "score": "high"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=xenial",
            "ecosystem": "Ubuntu:16.04:LTS"
          },
          "versions": [
            "2.2.1-13"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "2.2.1-13"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=bionic",
            "ecosystem": "Ubuntu:18.04:LTS"
          },
          "versions": [
            "3.1-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "3.1-1"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=focal",
            "ecosystem": "Ubuntu:20.04:LTS"
          },
          "versions": [
            "3.2-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "3.2-1"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
            "3.3-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "3.3-1"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "3.3-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "3.3-1"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "3.3-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "3.3-1"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "3.3-1build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "3.3-1build1"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "redir",
            "purl": "pkg:deb/ubuntu/redir?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "3.3-1",
            "3.3-1build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-37182.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "redir",
                "binary_version": "3.3-1build1"
              }
            ],
            "priority_reason": "A remote attacker can potentially cause a denial of service"
          }
        }
      ],
      "modified": "2026-10-17T12:56:14.788310563Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-37182"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2020-37182",
        "https://www.cve.org/CVERecord?id=CVE-2020-37182",
        "https://www.exploit-db.com/exploits/47919",
        "https://github.com/troglobit/redir",
        "https://www.vulncheck.com/advisories/redir-denial-of-service"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-37182",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/1/score"
  },
  "source_id": "core-osv",
  "document_id": 355023,
  "published_at": "2026-02-11T21:16:00+00:00"
}