Vulnerability-Lookup

GHSA-8PVV-PX4F-4PX7

Vulnerability from github – Published: 2023-10-11 21:33 – Updated: 2024-03-06 00:31

Details

This issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.

This issue affects:

Juniper Networks Junos OS:

All versions prior to 20.4R3-S8;
21.1 versions 21.1R1 and later;
21.2 versions prior to 21.2R3-S6;
21.3 versions prior to 21.3R3-S5;
21.4 versions prior to 21.4R3-S5;
22.1 versions prior to 22.1R3-S4;
22.2 versions prior to 22.2R3-S2;
22.3 versions prior to 22.3R2-S2, 22.3R3-S1;
22.4 versions prior to 22.4R2-S1, 22.4R3;
23.2 versions prior to 23.2R2.

Juniper Networks Junos OS Evolved

All versions prior to 20.4R3-S8-EVO;
21.1 versions 21.1R1-EVO and later;
21.2 versions prior to 21.2R3-S6-EVO;
21.3 versions prior to 21.3R3-S5-EVO;
21.4 versions prior to 21.4R3-S5-EVO;
22.1 versions prior to 22.1R3-S4-EVO;
22.2 versions prior to 22.2R3-S2-EVO;
22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO;
23.2 versions prior to 23.2R2-EVO.

Severity

7.5 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2023-44186"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-755"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-10-11T21:15:09Z",
    "severity": "HIGH"
  },
  "details": "\nAn Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition.\n\nThis issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.\n\nThis issue affects:\n\nJuniper Networks Junos OS:\n\n\n\n  *  All versions prior to 20.4R3-S8;\n  *  21.1 versions 21.1R1 and later;\n  *  21.2 versions prior to 21.2R3-S6;\n  *  21.3 versions prior to 21.3R3-S5;\n  *  21.4 versions prior to 21.4R3-S5;\n  *  22.1 versions prior to 22.1R3-S4;\n  *  22.2 versions prior to 22.2R3-S2;\n  *  22.3 versions prior to 22.3R2-S2, 22.3R3-S1;\n  *  22.4 versions prior to 22.4R2-S1, 22.4R3;\n  *  23.2 versions prior to 23.2R2.\n\n\n\n\nJuniper Networks Junos OS Evolved\n\n\n\n  *  All versions prior to 20.4R3-S8-EVO;\n  *  21.1 versions 21.1R1-EVO and later;\n  *  21.2 versions prior to 21.2R3-S6-EVO;\n  *  21.3 versions prior to 21.3R3-S5-EVO;\n  *  21.4 versions prior to 21.4R3-S5-EVO;\n  *  22.1 versions prior to 22.1R3-S4-EVO;\n  *  22.2 versions prior to 22.2R3-S2-EVO;\n  *  22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;\n  *  22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO;\n  *  23.2 versions prior to 23.2R2-EVO.\n\n\n\n\n\n\n",
  "id": "GHSA-8pvv-px4f-4px7",
  "modified": "2024-03-06T00:31:26Z",
  "published": "2023-10-11T21:33:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-44186"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA73150"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-44186 (GCVE-0-2023-44186)

Vulnerability from cvelistv5 – Published: 2023-10-11 20:08 – Updated: 2024-12-03 14:49

Title

Junos OS and Junos OS Evolved: RPD crash when attempting to send a very long AS PATH to a non-4-byte-AS capable BGP neighbor

Summary

An Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition. This issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor. Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability. This issue affects: Juniper Networks Junos OS: * All versions prior to 20.4R3-S8; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S6; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S5; * 22.1 versions prior to 22.1R3-S4; * 22.2 versions prior to 22.2R3-S2; * 22.3 versions prior to 22.3R2-S2, 22.3R3-S1; * 22.4 versions prior to 22.4R2-S1, 22.4R3. Juniper Networks Junos OS Evolved * All versions prior to 20.4R3-S8-EVO; * 21.1 versions 21.1R1-EVO and later; * 21.2 versions prior to 21.2R3-S6-EVO; * 21.3 versions prior to 21.3R3-S5-EVO; * 21.4 versions prior to 21.4R3-S5-EVO; * 22.1 versions prior to 22.1R3-S4-EVO; * 22.2 versions prior to 22.2R3-S2-EVO; * 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO; * 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO.

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 2024-03-06 16:45 UTC

CWE

CWE-755 - Improper Handling of Exceptional Conditions
Denial of Service (DoS)

Assigner

juniper mitre root

References

1 reference

URL	Tags
https://supportportal.juniper.net/JSA73150	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 0 , < 20.4R3-S8 (semver) Affected: 21.1R1 , < 21.1* (semver) Affected: 21.2 , < 21.2R3-S6 (semver) Affected: 21.3 , < 21.3R3-S5 (semver) Affected: 21.4 , < 21.4R3-S5 (semver) Affected: 22.1 , < 22.1R3-S4 (semver) Affected: 22.2 , < 22.2R3-S2 (semver) Affected: 22.3 , < 22.3R2-S2, 22.3R3-S1 (semver) Affected: 22.4 , < 22.4R2-S1, 22.4R3 (semver)
Juniper Networks	Junos OS Evolved	Affected: 0 , < 20.4R3-S8-EVO (semver) Affected: 21.1 , < 21.1-EVO (semver) Affected:* 21.2 , < 21.2R3-S6-EVO (semver) Affected: 21.3 , < 21.3R3-S5-EVO (semver) Affected: 21.4 , < 21.4R3-S5-EVO (semver) Affected: 22.1 , < 22.1R3-S4-EVO (semver) Affected: 22.2 , < 22.2R3-S2-EVO (semver) Affected: 22.3 , < 22.3R2-S2-EVO, 22.3R3-S1-EVO (semver) Affected: 22.4 , < 22.4R2-S1-EVO, 22.4R3-EVO (semver)

Date Public

2023-10-11 16:00

Show details on NVD website

JSON

To clipboard

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              "value": "\u003cp\u003eNonstop Active Routing is enabled using the following configuration:\u003c/p\u003e \u003ctt\u003e[edit chassis redundancy]\u003cbr\u003e\u003c/tt\u003e\u003ctt\u003egraceful-switchover;\u003cbr\u003e\u003c/tt\u003e\u003ctt\u003e\u003cbr\u003e[edit routing-options]\u003cbr\u003e\u003c/tt\u003e\u003ctt\u003enonstop-routing;\u003c/tt\u003e"
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              "value": "\n\n\u003cp\u003eAn Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition.\u003c/p\u003e\u003cp\u003eThis issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.\u003c/p\u003eNote: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.\u003cbr\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJuniper Networks Junos OS:\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions prior to 20.4R3-S8;\u003c/li\u003e\u003cli\u003e21.1 versions 21.1R1 and later;\u003c/li\u003e\u003cli\u003e21.2 versions prior to 21.2R3-S6;\u003c/li\u003e\u003cli\u003e21.3 versions prior to 21.3R3-S5;\u003c/li\u003e\u003cli\u003e21.4 versions prior to 21.4R3-S5;\u003c/li\u003e\u003cli\u003e22.1 versions prior to 22.1R3-S4;\u003c/li\u003e\u003cli\u003e22.2 versions prior to 22.2R3-S2;\u003c/li\u003e\u003cli\u003e22.3 versions prior to 22.3R2-S2, 22.3R3-S1;\u003c/li\u003e\u003cli\u003e22.4 versions prior to 22.4R2-S1, 22.4R3.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eJuniper Networks Junos OS Evolved\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions prior to 20.4R3-S8-EVO;\u003c/li\u003e\u003cli\u003e21.1 versions 21.1R1-EVO and later;\u003c/li\u003e\u003cli\u003e21.2 versions prior to 21.2R3-S6-EVO;\u003c/li\u003e\u003cli\u003e21.3 versions prior to 21.3R3-S5-EVO;\u003c/li\u003e\u003cli\u003e21.4 versions prior to 21.4R3-S5-EVO;\u003c/li\u003e\u003cli\u003e22.1 versions prior to 22.1R3-S4-EVO;\u003c/li\u003e\u003cli\u003e22.2 versions prior to 22.2R3-S2-EVO;\u003c/li\u003e\u003cli\u003e22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;\u003c/li\u003e\u003cli\u003e22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\n\n"
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            }
          ],
          "value": "The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S1, 22.4R3, 23.2R1, and all subsequent releases.\n\nJunos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S1-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.\n\n"
        }
      ],
      "source": {
        "advisory": "JSA73150",
        "defect": [
          "1736029"
        ],
        "discovery": "EXTERNAL"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2023-10-11T16:00:00.000Z",
          "value": "Initial Publication"
        },
        {
          "lang": "en",
          "time": "2023-10-16T16:00:00.000Z",
          "value": "Added specific platforms affected and unaffected"
        },
        {
          "lang": "en",
          "time": "2024-03-05T17:00:00.000Z",
          "value": "Updated affected/fixed releases to convey that 23.2R1 and all subsequent releases are fixed."
        }
      ],
      "title": "Junos OS and Junos OS Evolved: RPD crash when attempting to send a very long AS PATH to a non-4-byte-AS capable BGP neighbor",
      "workarounds": [
        {
          "lang": "en",
          "value": "Current operational and security best practices, such as limiting the AS PATH length, should mitigate risk of this issue.\n\nBelow is an example configuration to limit AS PATH to 30 entries:\n\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from protocol bgp\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from as-path 31as\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 then reject\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 then accept\nset groups BASE-POLICY policy-options policy-statement Customer-IN term MaxAS-Limit from policy MaxAS-Limit-30\nset groups BASE-BGP protocols bgp group \u003c*-CUSTOMER\u003e import Customer-IN\nset groups BASE-PREFIX-LISTS policy-options as-path 31as \".{31,}\""
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.1.0-av217"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
    "assignerShortName": "juniper",
    "cveId": "CVE-2023-44186",
    "datePublished": "2023-10-11T20:08:26.308Z",
    "dateReserved": "2023-09-26T19:30:27.953Z",
    "dateUpdated": "2024-12-03T14:49:41.755Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.