CVE-2026-57187 (GCVE-0-2026-57187)

Vulnerability from cvelistv5 – Published: 2026-10-26 19:31 – Updated: 2026-10-26 19:31
VLAI
Title
Asterisk: Heap-use-after-free in Asterisk PJSIP TCP/SDP handling when TCP connection closes during SDP processing
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may cause a heap-use-after-free in `PJSIP TCP/SDP` handling by sending a `SIP INVITE` over a connection-oriented transport and disconnecting before Asterisk responds with the `200 OK`. So far, the crash has only been reproduced when Asterisk is built with `Address Sanitizer`, which detects the issue. `Address Sanitizer` is a development tool with significant performance overhead and, according to the maintainer, is not used in production systems. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-416 - Use After Free
  • CWE-664 - Improper Control of a Resource Through its Lifetime
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7838 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
asterisk asterisk Affected: < 20.20.1
Affected: >= 21.0.0-pre1, < 21.12.3
Affected: >= 22.0.0-pre1, < 22.10.1
Affected: >= 23.0.0-pre1, < 23.4.1
guessed Create a notification for this product.
asterisk certified-asterisk Affected: < 20.7-cert11
Affected: >= 22.8-cert1-pre1, < 22.8-cert3
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "asterisk",
          "vendor": "asterisk",
          "versions": [
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              "status": "affected",
              "version": "\u003c 20.20.1"
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              "version": "\u003e= 21.0.0-pre1, \u003c 21.12.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.0.0-pre1, \u003c 22.10.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 23.0.0-pre1, \u003c 23.4.1"
            }
          ]
        },
        {
          "product": "certified-asterisk",
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          "versions": [
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              "status": "affected",
              "version": "\u003c 20.7-cert11"
            },
            {
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              "version": "\u003e= 22.8-cert1-pre1, \u003c 22.8-cert3"
            }
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        }
      ],
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        {
          "lang": "en",
          "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may cause a heap-use-after-free in `PJSIP TCP/SDP` handling by sending a `SIP INVITE` over a connection-oriented transport and disconnecting before Asterisk responds with the `200 OK`. So far, the crash has only been reproduced when Asterisk is built with `Address Sanitizer`, which detects the issue. `Address Sanitizer` is a development tool with significant performance overhead and, according to the maintainer, is not used in production systems. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416: Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-664",
              "description": "CWE-664: Improper Control of a Resource Through its Lifetime",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-26T19:31:52.937Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-g8q2-p36q-94f6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-g8q2-p36q-94f6"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/0f076168e0be31ebee37762192d0ee049e9c0d42",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/0f076168e0be31ebee37762192d0ee049e9c0d42"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/27b9544b32f059a4f614169243eaa7559f622aa0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/27b9544b32f059a4f614169243eaa7559f622aa0"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/6e1f4df744369d66ea6f412e355d819b2a7bf26c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/6e1f4df744369d66ea6f412e355d819b2a7bf26c"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/9e0386c6d259f0c7499d52499d9891bee8a494fa",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/asterisk/asterisk/commit/9e0386c6d259f0c7499d52499d9891bee8a494fa"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/b7ba85458796ef54b471017287c7806095dbda76",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/b7ba85458796ef54b471017287c7806095dbda76"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/d4e30005940f86942745bcc64f34748d69870247",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/d4e30005940f86942745bcc64f34748d69870247"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/f1e47621472bb3d8ad71f32823f5ca986e008437",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/f1e47621472bb3d8ad71f32823f5ca986e008437"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/20.20.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/21.12.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/21.12.3"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/22.10.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/23.4.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
        },
        {
          "name": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"
        }
      ],
      "source": {
        "advisory": "GHSA-g8q2-p36q-94f6",
        "discovery": "UNKNOWN"
      },
      "title": "Asterisk: Heap-use-after-free in Asterisk PJSIP TCP/SDP handling when TCP connection closes during SDP processing"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57187",
    "datePublished": "2026-10-26T19:31:52.937Z",
    "dateReserved": "2026-06-24T02:00:46.799Z",
    "dateUpdated": "2026-10-26T19:31:52.937Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-57187",
      "date": "2026-10-27",
      "epss": "0.00481",
      "percentile": "0.41315"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "asterisk",
                "vendor": "asterisk",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 20.20.1"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 21.0.0-pre1, \u003c 21.12.3"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 22.0.0-pre1, \u003c 22.10.1"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 23.0.0-pre1, \u003c 23.4.1"
                  }
                ]
              },
              {
                "product": "certified-asterisk",
                "vendor": "asterisk",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 20.7-cert11"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 22.8-cert1-pre1, \u003c 22.8-cert3"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an authenticated attacker may cause a heap-use-after-free in `PJSIP TCP/SDP` handling by sending a `SIP INVITE` over a connection-oriented transport and disconnecting before Asterisk responds with the `200 OK`. So far, the crash has only been reproduced when Asterisk is built with `Address Sanitizer`, which detects the issue. `Address Sanitizer` is a development tool with significant performance overhead and, according to the maintainer, is not used in production systems. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."
          }
        ],
        "id": "CVE-2026-57187",
        "lastModified": "2026-10-27T15:08:50.630",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "LOW",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-26T20:17:56.700",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/commit/0f076168e0be31ebee37762192d0ee049e9c0d42"
          },
          {
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            "url": "https://github.com/asterisk/asterisk/commit/27b9544b32f059a4f614169243eaa7559f622aa0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/commit/6e1f4df744369d66ea6f412e355d819b2a7bf26c"
          },
          {
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            "url": "https://github.com/asterisk/asterisk/commit/f1e47621472bb3d8ad71f32823f5ca986e008437"
          },
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            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"
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            "source": "security-advisories@github.com",
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            "url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"
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            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"
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          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
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            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-g8q2-p36q-94f6"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"
          }
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        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              },
              {
                "lang": "en",
                "value": "CWE-664"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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