CVE-2024-21593 (GCVE-0-2024-21593)

Vulnerability from cvelistv5 – Published: 2024-04-12 14:54 – Updated: 2024-08-01 22:27
VLAI?
Title
Junos OS: MX Series with MPC10, MPC11, LC9600, and MX304: A specific MPLS packet will cause a PFE crash
Summary
An Improper Check or Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). If an attacker sends a specific MPLS packet, which upon processing, causes an internal loop, that leads to a PFE crash and restart. Continued receipt of these packets leads to a sustained Denial of Service (DoS) condition. Circuit cross-connect (CCC) needs to be configured on the device for it to be affected by this issue. This issue only affects MX Series with MPC10, MPC11, LC9600, and MX304. This issue affects: Juniper Networks Junos OS 21.4 versions from 21.4R3 earlier than 21.4R3-S5; 22.2 versions from 22.2R2 earlier than 22.2R3-S2; 22.3 versions from 22.3R1 earlier than 22.3R2-S2; 22.3 versions from 22.3R3 earlier than 22.3R3-S1 22.4 versions from 22.4R1 earlier than 22.4R2-S2, 22.4R3; 23.2 versions earlier than 23.2R1-S1, 23.2R2.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
CWE
  • CWE-703 - Improper Check or Handling of Exceptional Conditions
  • Denial of Service (DoS)
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 21.4R3 , < 21.4R3-S5 (semver)
Unaffected: 22.1
Affected: 22.2R2 , < 22.2R3-S2 (semver)
Affected: 22.3R1 , < 22.3R2-S2 (semver)
Affected: 22.3R3 , < 22.3R3-S1 (semver)
Affected: 22.4R1 , < 22.4R2-S2, 22.4R3 (semver)
Affected: 23.2 , < 23.2R1-S1, 23.2R2 (semver)
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Continued receipt of these packets leads to a sustained Denial of Service (DoS) condition.\\n \\nCircuit cross-connect (CCC) needs to be configured on the device for it to be affected by this issue.\\n\\nThis issue only affects MX Series with MPC10, MPC11, LC9600, and MX304.\\n\\nThis issue affects:\\nJuniper Networks Junos OS\\n21.4 versions from 21.4R3 earlier than 21.4R3-S5;\\n22.2 versions from 22.2R2 earlier than 22.2R3-S2;\\n22.3 versions from 22.3R1 earlier than 22.3R2-S2;\\n22.3 versions from 22.3R3 earlier than\\u00a022.3R3-S1\\n22.4 versions from 22.4R1 earlier than 22.4R2-S2, 22.4R3;\\n23.2 versions earlier than 23.2R1-S1, 23.2R2.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An Improper Check or Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).\u003cbr\u003e\u003cbr\u003eIf an attacker sends a specific MPLS packet, which upon processing, causes an internal loop, that leads to a PFE crash and restart. Continued receipt of these packets leads to a sustained Denial of Service (DoS) condition.\u003cbr\u003e \u003cbr\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eCircuit cross-connect (CCC) needs to be configured on the device for it to be affected by this issue.\u003cbr\u003e\u003c/span\u003e\u003cbr\u003eThis issue only affects MX Series with MPC10, MPC11, LC9600, and MX304.\u003cbr\u003e\u003cbr\u003eThis issue affects:\u003cbr\u003eJuniper Networks Junos OS\u003cbr\u003e21.4 versions from 21.4R3 earlier than 21.4R3-S5;\u003cbr\u003e22.2 versions from 22.2R2 earlier than 22.2R3-S2;\u003cbr\u003e22.3 versions from 22.3R1 earlier than 22.3R2-S2;\u003cbr\u003e22.3 versions from 22.3R3 earlier than\u0026nbsp;\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e22.3R3-S1\u003c/span\u003e\u003cbr\u003e22.4 versions from 22.4R1 earlier than 22.4R2-S2, 22.4R3;\u003cbr\u003e23.2 versions earlier than 23.2R1-S1, 23.2R2.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-703\", \"description\": \"CWE-703 Improper Check or Handling of Exceptional Conditions\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"description\": \"Denial of Service (DoS)\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"To be affected by this issue, the following configuration is required on the device:\\n\\u00a0   [ encapsulation ethernet-ccc ]\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"To be affected by this issue, the following configuration is required on the device:\u003cbr\u003e\u0026nbsp;   [ encapsulation ethernet-ccc ]\u003cbr\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2024-05-16T20:06:30.729Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-21593\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-08-01T22:27:35.554Z\", \"dateReserved\": \"2023-12-27T19:38:25.704Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2024-04-12T14:54:08.039Z\", \"assignerShortName\": \"juniper\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.