github - ghsa-g96c-x7rh-99r3

GHSA-G96C-X7RH-99R3

Vulnerability from github – Published: 2023-07-06 20:51 – Updated: 2023-09-07 21:19

Summary

Graylog vulnerable to insecure source port usage for DNS queries

Details

Summary

Graylog utilises only one single source port for DNS queries.

Details

Graylog seems to bind a single socket for outgoing DNS queries. That socket is bound to a random port number which is not changed again. This goes against recommended practice since 2008, when Dan Kaminsky discovered how easy is to carry out DNS cache poisoning attacks. In order to prevent cache poisoning with spoofed DNS responses, it is necessary to maximise the uncertainty in the choice of a source port for a DNS query.

PoC

The attached figure shows the source ports distribution difference between Graylog configured to use a data adapter based on DNS queries and ISC Bind. The source port distribution of the DNS queries sent from Graylog to a recursive DNS name server running Bind (CLIENT_QUERY) are depicted in purple, while the queries sent from the recursive DNS server to the authoritatives (RESOLVER_QUERY) are plotted in green color. As it can be observed, in contrast to ISC Bind which presents a heterogeneous usage of source port, Graylog utilises a single source port.

Impact

Although unlikely in many setups, an external attacker could inject forged DNS responses into a Graylog's lookup table cache. In order to prevent this, it is at least recommendable to distribute the DNS queries through a pool of distinct sockets, each of them with a random source port and renew them periodically.

(Credit to Iratxe Niño from Fundación Sarenet and Borja Marcos from Sarenet)

Severity ?

3.7 (Low)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.graylog2:graylog2-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.1.0"
            },
            {
              "fixed": "5.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.graylog2:graylog2-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.0.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-41045"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2023-07-06T20:51:48Z",
    "nvd_published_at": "2023-08-31T18:15:09Z",
    "severity": "LOW"
  },
  "details": "### Summary\nGraylog utilises only one single source port for DNS queries.\n\n### Details\nGraylog seems to bind a single socket for outgoing DNS queries. That socket is bound to a random port number which is not changed again. This goes against recommended practice since 2008, when Dan Kaminsky discovered how easy is to carry out DNS cache poisoning attacks. In order to prevent cache poisoning with spoofed DNS responses, it is necessary to maximise the uncertainty in the choice of a source port for a DNS query.\n\n\n### PoC \n\nThe attached figure shows the source ports distribution difference between Graylog configured to use a data adapter based on DNS queries and ISC Bind.  The source port distribution of the DNS queries sent from Graylog to a recursive DNS name server running Bind (CLIENT_QUERY) are depicted in purple, while the queries sent from the recursive DNS server to the authoritatives (RESOLVER_QUERY) are plotted in green color. As it can be observed, in contrast to ISC Bind which presents a heterogeneous usage of source port, Graylog utilises a single source port.\n\n![image](https://user-images.githubusercontent.com/67056857/242301750-6a5a8d0d-fcd2-40d1-bbd4-73baa8279ed3.png)\n\n### Impact\nAlthough unlikely in many setups, an external attacker could inject forged DNS responses into a Graylog\u0027s lookup table cache. In order to prevent this, it is at least recommendable to distribute the DNS queries through a pool of distinct sockets, each of them with a random source port and renew them periodically.\n\n\n\n(Credit to Iratxe Ni\u00f1o from Fundaci\u00f3n Sarenet and Borja Marcos from Sarenet)",
  "id": "GHSA-g96c-x7rh-99r3",
  "modified": "2023-09-07T21:19:13Z",
  "published": "2023-07-06T20:51:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-g96c-x7rh-99r3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-41045"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Graylog2/graylog2-server/commit/466af814523cffae9fbc7e77bab7472988f03c3e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Graylog2/graylog2-server/commit/a101f4f12180fd3dfa7d3345188a099877a3c327"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Graylog2/graylog2-server"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Graylog vulnerable to insecure source port usage for DNS queries"
}

CVE-2023-41045 (GCVE-0-2023-41045)

Vulnerability from cvelistv5 – Published: 2023-08-31 17:59 – Updated: 2024-10-01 16:56

Summary

Graylog is a free and open log management platform. Graylog makes use of only one single source port for DNS queries. Graylog binds a single socket for outgoing DNS queries and while that socket is bound to a random port number it is never changed again. This goes against recommended practice since 2008, when Dan Kaminsky discovered how easy is to carry out DNS cache poisoning attacks. In order to prevent cache poisoning with spoofed DNS responses, it is necessary to maximise the uncertainty in the choice of a source port for a DNS query. Although unlikely in many setups, an external attacker could inject forged DNS responses into a Graylog's lookup table cache. In order to prevent this, it is at least recommendable to distribute the DNS queries through a pool of distinct sockets, each of them with a random source port and renew them periodically. This issue has been addressed in versions 5.0.9 and 5.1.3. Users are advised to upgrade. There are no known workarounds for this issue.

Severity ?

3.7 (Low)


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

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

GitHub_M

References

URL

Tags

	https://github.com/Graylog2/graylog2-server/secur…	x_refsource_CONFIRM
	https://github.com/Graylog2/graylog2-server/commi…	x_refsource_MISC
	https://github.com/Graylog2/graylog2-server/commi…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Graylog2	graylog2-server	Affected: < 5.0.9 Affected: >= 5.1.0, < 5.1.3

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T18:46:11.839Z",
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            "url": "https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-g96c-x7rh-99r3"
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          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-41045",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-01T16:55:58.051737Z",
                "version": "2.0.3"
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        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-01T16:56:12.604Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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    ],
    "cna": {
      "affected": [
        {
          "product": "graylog2-server",
          "vendor": "Graylog2",
          "versions": [
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        }
      ],
      "metrics": [
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            "attackVector": "NETWORK",
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            "scope": "UNCHANGED",
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  "cveMetadata": {
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    "datePublished": "2023-08-31T17:59:41.147Z",
    "dateReserved": "2023-08-22T16:57:23.932Z",
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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

GHSA-G96C-X7RH-99R3

Summary

Details

PoC

Impact

CVE-2023-41045 (GCVE-0-2023-41045)

Tags

Sightings

Nomenclature