certfr_avis - certfr-2020-avi-720

CERTFR-2020-AVI-720

Vulnerability from certfr_avis - Published: - Updated:

De multiples vulnérabilités ont été corrigées dans Asterisk. Elles permettent à un attaquant de provoquer un déni de service et un contournement de la politique de sécurité.

Solution

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

None

Impacted products

Vendor	Product	Description
Asterisk	Certified Asterisk	Certified Asterisk versions 16.8 antérieures à 16.8-cert5
Asterisk	Asterisk	Asterisk Open Source versions 17.x antérieures à 17.8.1
Asterisk	Asterisk	Asterisk Open Source versions 16.x antérieures à 16.14.1
Asterisk	Asterisk	Asterisk Open Source versions 18.x antérieures à 18.0.1
Asterisk	Asterisk	Asterisk Open Source versions 13.x antérieures à 13.37.1

References

Title

Publication Time

Tags

Bulletin de sécurité Asterisk AST-2020-001 du 05 novembre 2020	None	vendor-advisory
Bulletin de sécurité Asterisk AST-2020-002 du 05 novembre 2020	None	vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Certified Asterisk versions 16.8 ant\u00e9rieures \u00e0 16.8-cert5",
      "product": {
        "name": "Certified Asterisk",
        "vendor": {
          "name": "Asterisk",
          "scada": false
        }
      }
    },
    {
      "description": "Asterisk Open Source versions 17.x ant\u00e9rieures \u00e0 17.8.1",
      "product": {
        "name": "Asterisk",
        "vendor": {
          "name": "Asterisk",
          "scada": false
        }
      }
    },
    {
      "description": "Asterisk Open Source versions 16.x ant\u00e9rieures \u00e0 16.14.1",
      "product": {
        "name": "Asterisk",
        "vendor": {
          "name": "Asterisk",
          "scada": false
        }
      }
    },
    {
      "description": "Asterisk Open Source versions 18.x ant\u00e9rieures \u00e0 18.0.1",
      "product": {
        "name": "Asterisk",
        "vendor": {
          "name": "Asterisk",
          "scada": false
        }
      }
    },
    {
      "description": "Asterisk Open Source versions 13.x ant\u00e9rieures \u00e0 13.37.1",
      "product": {
        "name": "Asterisk",
        "vendor": {
          "name": "Asterisk",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2020-28327",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-28327"
    }
  ],
  "links": [],
  "reference": "CERTFR-2020-AVI-720",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2020-11-09T00:00:00.000000"
    },
    {
      "description": "Correction faute d\u0027orthographe",
      "revision_date": "2020-11-09T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es dans Asterisk. Elles\npermettent \u00e0 un attaquant de provoquer un d\u00e9ni de service et un\ncontournement de la politique de s\u00e9curit\u00e9.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Asterisk",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Asterisk AST-2020-001 du 05 novembre 2020",
      "url": "http://downloads.asterisk.org/pub/security/AST-2020-001.html"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Asterisk AST-2020-002 du 05 novembre 2020",
      "url": "http://downloads.asterisk.org/pub/security/AST-2020-002.html"
    }
  ]
}

CVE-2020-28327 (GCVE-0-2020-28327)

Vulnerability from cvelistv5 – Published: 2020-11-06 18:08 – Updated: 2024-08-04 16:33

Summary

A res_pjsip_session crash was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1. and Certified Asterisk before 16.8-cert5. Upon receiving a new SIP Invite, Asterisk did not return the created dialog locked or referenced. This caused a gap between the creation of the dialog object, and its next use by the thread that created it. Depending on some off-nominal circumstances and timing, it was possible for another thread to free said dialog in this gap. Asterisk could then crash when the dialog object, or any of its dependent objects, were dereferenced or accessed next by the initial-creation thread. Note, however, that this crash can only occur when using a connection-oriented protocol (e.g., TCP or TLS, but not UDP) for SIP transport. Also, the remote client must be authenticated, or Asterisk must be configured for anonymous calling.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	http://downloads.asterisk.org/pub/security/AST-20…	x_refsource_MISC
	https://issues.asterisk.org/jira/browse/ASTERISK-29057	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T16:33:58.306Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://downloads.asterisk.org/pub/security/AST-2020-001.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29057"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A res_pjsip_session crash was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1. and Certified Asterisk before 16.8-cert5. Upon receiving a new SIP Invite, Asterisk did not return the created dialog locked or referenced. This caused a gap between the creation of the dialog object, and its next use by the thread that created it. Depending on some off-nominal circumstances and timing, it was possible for another thread to free said dialog in this gap. Asterisk could then crash when the dialog object, or any of its dependent objects, were dereferenced or accessed next by the initial-creation thread. Note, however, that this crash can only occur when using a connection-oriented protocol (e.g., TCP or TLS, but not UDP) for SIP transport. Also, the remote client must be authenticated, or Asterisk must be configured for anonymous calling."
        }
      ],
      "problemTypes": [
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              "description": "n/a",
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            }
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      "providerMetadata": {
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            "x_refsource_MISC"
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          "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29057"
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-28327",
          "STATE": "PUBLIC"
        },
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              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
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                      }
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                },
                "vendor_name": "n/a"
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        "data_format": "MITRE",
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              "url": "http://downloads.asterisk.org/pub/security/AST-2020-001.html"
            },
            {
              "name": "https://issues.asterisk.org/jira/browse/ASTERISK-29057",
              "refsource": "MISC",
              "url": "https://issues.asterisk.org/jira/browse/ASTERISK-29057"
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  "cveMetadata": {
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}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CERTFR-2020-AVI-720

Solution

CVE-2020-28327 (GCVE-0-2020-28327)

Tags

Sightings

Nomenclature