Vulnerability-Lookup

CVE-2023-27598 (GCVE-0-2023-27598)

Vulnerability from cvelistv5 – Published: 2023-03-15 20:29 – Updated: 2025-02-25 14:57

Title

OpenSIPS has vulnerability in the parse_via() function

Summary

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed `Via` header to OpenSIPS triggers a segmentation fault when the function `calc_tag_suffix` is called. A specially crafted `Via` header, which is deemed correct by the parser, will pass uninitialized strings to the function `MD5StringArray` which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location `0x0`, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as `sl_send_reply` or `sl_gen_totag` that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-25 14:30 UTC

CWE

CWE-908 - Use of Uninitialized Resource

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/OpenSIPS/opensips/security/adv…	x_refsource_CONFIRM
https://github.com/OpenSIPS/opensips/commit/ab611…	x_refsource_MISC
https://opensips.org/pub/audit-2022/opensips-audi…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
OpenSIPS	opensips	Affected: < 3.1.7 Affected: >= 3.2.0, < 3.2.4	guessed

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              "value": "OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed `Via` header to OpenSIPS triggers a segmentation fault when the function `calc_tag_suffix` is called. A specially crafted `Via` header, which is deemed correct by the parser, will pass uninitialized strings to the function `MD5StringArray` which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location `0x0`, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as `sl_send_reply` or `sl_gen_totag` that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "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"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-908",
                  "description": "CWE-908: Use of Uninitialized Resource",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-03-15T20:29:49.673Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx"
            },
            {
              "name": "https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7"
            },
            {
              "name": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf"
            }
          ],
          "source": {
            "advisory": "GHSA-wxfg-3gwh-rhvx",
            "discovery": "UNKNOWN"
          },
          "title": "OpenSIPS has vulnerability in the parse_via() function"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2023-27598",
        "datePublished": "2023-03-15T20:29:49.673Z",
        "dateReserved": "2023-03-04T01:03:53.637Z",
        "dateUpdated": "2025-02-25T14:57:06.043Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2023-27598

Vulnerability from fkie_nvd - Published: 2023-03-15 21:15 - Updated: 2026-06-17 05:45

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx	Third Party Advisory
security-advisories@github.com	https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf	Third Party Advisory

Impacted products

	Vendor	Product	Version
	opensips	opensips	*
	opensips	opensips	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "opensips",
          "vendor": "OpenSIPS",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.1.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.2.0, \u003c 3.2.4"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8EF642AA-D786-40DF-801D-515888AF89BE",
              "versionEndExcluding": "3.1.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "34713A76-CAED-43CF-A77C-73F1C36208AA",
              "versionEndExcluding": "3.2.4",
              "versionStartIncluding": "3.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed `Via` header to OpenSIPS triggers a segmentation fault when the function `calc_tag_suffix` is called. A specially crafted `Via` header, which is deemed correct by the parser, will pass uninitialized strings to the function `MD5StringArray` which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location `0x0`, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as `sl_send_reply` or `sl_gen_totag` that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4."
    }
  ],
  "id": "CVE-2023-27598",
  "lastModified": "2026-06-17T05:45:33.283",
  "metrics": {
    "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": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-27598",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-02-25T14:30:55.171998Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-03-15T21:15:09.143",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-908"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-908"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GSD-2023-27598

Vulnerability from gsd - Updated: 2023-12-13 01:20

Details

Aliases

CVE-2023-27598

Aliases

CVE-2023-27598

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2023-27598",
    "id": "GSD-2023-27598"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-27598"
      ],
      "details": "OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed `Via` header to OpenSIPS triggers a segmentation fault when the function `calc_tag_suffix` is called. A specially crafted `Via` header, which is deemed correct by the parser, will pass uninitialized strings to the function `MD5StringArray` which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location `0x0`, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as `sl_send_reply` or `sl_gen_totag` that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4.",
      "id": "GSD-2023-27598",
      "modified": "2023-12-13T01:20:56.102026Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
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        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "opensips",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003c 3.1.7"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "\u003e= 3.2.0, \u003c 3.2.4"
                        }
                      ]
                    }
                  }
                ]
              },
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          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "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"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
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                "cweId": "CWE-908",
                "lang": "eng",
                "value": "CWE-908: Use of Uninitialized Resource"
              }
            ]
          }
        ]
      },
      "references": {
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          {
            "name": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx",
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            "url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx"
          },
          {
            "name": "https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7",
            "refsource": "MISC",
            "url": "https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7"
          },
          {
            "name": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf",
            "refsource": "MISC",
            "url": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-wxfg-3gwh-rhvx",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
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        "nodes": [
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                "cpe_name": [],
                "versionEndExcluding": "3.1.7",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.2.4",
                "versionStartIncluding": "3.2.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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        "description": {
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            }
          ]
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                "Patch",
                "Third Party Advisory"
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                "Third Party Advisory"
              ],
              "url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx"
            },
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              "name": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "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
        }
      },
      "lastModifiedDate": "2023-03-21T19:14Z",
      "publishedDate": "2023-03-15T21:15Z"
    }
  }
}

UBUNTU-CVE-2023-27598 (CVE-2023-27598)

Vulnerability from osv_ubuntu – Published: 2023-03-15 21:15 – Updated: 2025-10-24 05:01 – Source website

Details

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed Via header to OpenSIPS triggers a segmentation fault when the function calc_tag_suffix is called. A specially crafted Via header, which is deemed correct by the parser, will pass uninitialized strings to the function MD5StringArray which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location 0x0, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as sl_send_reply or sl_gen_totag that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-27598	REPORT
	https://github.com/OpenSIPS/opensips/commit/ab611…	REPORT
	https://github.com/OpenSIPS/opensips/security/adv…	REPORT
	https://opensips.org/pub/audit-2022/opensips-audi…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2023-27598	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "opensips",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-b2bua-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-berkeley-bin",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-berkeley-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-carrierroute-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-compression-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-console",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-cpl-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-dbhttp-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-dialplan-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-emergency-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-geoip-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-http-modules",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-identity-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-jabber-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-json-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-ldap-modules",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-lua-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-memcached-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-mysql-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-perl-modules",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-postgres-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-presence-modules",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-rabbitmq-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-radius-modules",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-redis-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-regex-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-restclient-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-sctp-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-snmpstats-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-sqlite-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-tls-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-tlsmgm-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-unixodbc-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-wss-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-xmlrpc-module",
            "binary_version": "2.2.2-3build4"
          },
          {
            "binary_name": "opensips-xmpp-module",
            "binary_version": "2.2.2-3build4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "opensips",
        "purl": "pkg:deb/ubuntu/opensips@2.2.2-3build4?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.2-3build2",
        "2.2.2-3build3",
        "2.2.2-3build4"
      ]
    }
  ],
  "aliases": [],
  "details": "OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed `Via` header to OpenSIPS triggers a segmentation fault when the function `calc_tag_suffix` is called. A specially crafted `Via` header, which is deemed correct by the parser, will pass uninitialized strings to the function `MD5StringArray` which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location `0x0`, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as `sl_send_reply` or `sl_gen_totag` that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4.",
  "id": "UBUNTU-CVE-2023-27598",
  "modified": "2025-10-24T05:01:52Z",
  "published": "2023-03-15T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-27598"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/OpenSIPS/opensips/commit/ab611f74f69d9c42be5401c40d56ea06a58f5dd7"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/OpenSIPS/opensips/security/advisories/GHSA-wxfg-3gwh-rhvx"
    },
    {
      "type": "REPORT",
      "url": "https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-27598"
    }
  ],
  "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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-27598"
  ]
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2023-27598 (GCVE-0-2023-27598)

FKIE_CVE-2023-27598

GSD-2023-27598

UBUNTU-CVE-2023-27598 (CVE-2023-27598)

Tags

Sightings

Nomenclature

Related by attack behaviour