fkie_cve-2025-57767
Vulnerability from fkie_nvd
Published
2025-08-28 16:15
Modified
2025-08-29 16:24
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, and 22.5.2, if a SIP request is received with an Authorization header that contains a realm that wasn't in a previous 401 response's WWW-Authenticate header, or an Authorization header with an incorrect realm was received without a previous 401 response being sent, the get_authorization_header() function in res_pjsip_authenticator_digest will return a NULL. This wasn't being checked before attempting to get the digest algorithm from the header which causes a SEGV. This issue has been patched in versions 20.15.2, 21.10.2, and 22.5.2. There are no workarounds.
References
security-advisories@github.comhttps://github.com/asterisk/asterisk/commit/02993717b08f899d4aca9888062f35dfb198584f
security-advisories@github.comhttps://github.com/asterisk/asterisk/pull/1407
security-advisories@github.comhttps://github.com/asterisk/asterisk/security/advisories/GHSA-64qc-9x89-rx5j
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, and 22.5.2, if a SIP request is received with an Authorization header that contains a realm that wasn\u0027t in a previous 401 response\u0027s WWW-Authenticate header, or an Authorization header with an incorrect realm was received without a previous 401 response being sent, the get_authorization_header() function in res_pjsip_authenticator_digest will return a NULL. This wasn\u0027t being checked before attempting to get the digest algorithm from the header which causes a SEGV. This issue has been patched in versions 20.15.2, 21.10.2, and 22.5.2. There are no workarounds."
    }
  ],
  "id": "CVE-2025-57767",
  "lastModified": "2025-08-29T16:24:29.730",
  "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"
      }
    ]
  },
  "published": "2025-08-28T16:15:35.410",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/commit/02993717b08f899d4aca9888062f35dfb198584f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/pull/1407"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-64qc-9x89-rx5j"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-253"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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