CVE-2021-32558 (GCVE-0-2021-32558)

Vulnerability from cvelistv5 – Published: 2021-07-27 05:19 – Updated: 2024-08-03 23:25
VLAI
Summary
An issue was discovered in Sangoma Asterisk 13.x before 13.38.3, 16.x before 16.19.1, 17.x before 17.9.4, and 18.x before 18.5.1, and Certified Asterisk before 16.8-cert10. If the IAX2 channel driver receives a packet that contains an unsupported media format, a crash can occur.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc2:*:*:*:*:*:*",
                    "matchCriteriaId": "CEA2CC40-C2F6-4828-82F0-1B50D3E61F77",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc3:*:*:*:*:*:*",
                    "matchCriteriaId": "32F19F43-C1E8-4B6C-9356-AF355B7320BD",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert1-rc4:*:*:*:*:*:*",
                    "matchCriteriaId": "21D1FA32-B441-485F-8AE9-F3A394626909",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert2:*:*:*:*:*:*",
                    "matchCriteriaId": "F7795CCF-B160-4B4F-9529-1192C11D7FDB",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert3:*:*:*:*:*:*",
                    "matchCriteriaId": "0C5E5D0D-9EB3-40FD-8B7E-E93A95D07AB1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4:*:*:*:*:*:*",
                    "matchCriteriaId": "C7DFDA30-DD61-4BBC-AFE4-448BF2A4F303",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert4-rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "142F1F89-49AC-4A0B-A273-61F697063A5A",
                    "vulnerable": true
                  },
                  {
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                    "matchCriteriaId": "53041795-788C-4914-A2F6-41539ABE0244",
                    "vulnerable": true
                  },
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                    "matchCriteriaId": "769C854C-03CD-40A9-B39B-C0CDCA8252EA",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert5:*:*:*:*:*:*",
                    "matchCriteriaId": "6D86AD6E-4E07-48B0-88D8-E18F277FFE6A",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert6:*:*:*:*:*:*",
                    "matchCriteriaId": "7A643445-8A73-4ACC-8A96-CA8D6AC8B229",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert7:*:*:*:*:*:*",
                    "matchCriteriaId": "BD980324-52E2-4D3E-B8D8-52A2DB100306",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert8:*:*:*:*:*:*",
                    "matchCriteriaId": "4D5B8321-033A-47C5-A277-BE056C5ADB30",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:digium:certified_asterisk:16.8:cert9:*:*:*:*:*:*",
                    "matchCriteriaId": "12A2585A-A13F-4FD5-9A65-273B7D8A99C8",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An issue was discovered in Sangoma Asterisk 13.x before 13.38.3, 16.x before 16.19.1, 17.x before 17.9.4, and 18.x before 18.5.1, and Certified Asterisk before 16.8-cert10. If the IAX2 channel driver receives a packet that contains an unsupported media format, a crash can occur."
          },
          {
            "lang": "es",
            "value": "Se ha detectado un problema en Sangoma Asterisk versiones: 13.x  anteriores a 13.38.3, versiones 16.x anteriores a 16.19.1, versiones 17.x anteriores a 17.9.4, y versiones 18.x anteriores a 18.5.1, y Certified Asterisk versiones anteriores a 16.8-cert10. Si el controlador del canal IAX2 recibe un paquete que contiene un formato de medios no compatible, puede ocurrir un bloqueo"
          }
        ],
        "id": "CVE-2021-32558",
        "lastModified": "2024-11-21T06:07:16.057",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 5.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-07-30T14:15:16.910",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "http://seclists.org/fulldisclosure/2021/Jul/49"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://downloads.asterisk.org/pub/security/AST-2021-008.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29392"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/08/msg00005.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4999"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "http://seclists.org/fulldisclosure/2021/Jul/49"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://downloads.asterisk.org/pub/security/AST-2021-008.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29392"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/08/msg00005.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4999"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-74"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T16:14:45+00:00",
      "cve": "CVE-2021-32558",
      "id": "CVE-2021-32558",
      "initial_release_date": "2021-07-23T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "asterisk: remote crash when using IAX2 channel driver may lead to DoS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-32558.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.