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CVE-2024-39535 (GCVE-0-2024-39535)

Vulnerability from cvelistv5 – Published: 2024-07-11 16:09 – Updated: 2024-08-02 04:26
VLAI
Title
Junos OS Evolved: ACX 7000 Series: When specific traffic is received in a VPLS scenario evo-pfemand crashes
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). When a device has a Layer 3 or an IRB interface configured in a VPLS instance and specific traffic is received, the evo-pfemand processes crashes which causes a service outage for the respective FPC until the system is recovered manually. This issue only affects Junos OS Evolved 22.4R2-S1 and 22.4R2-S2 releases and is fixed in 22.4R3. No other releases are affected.
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-11 19:02 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Evolved Affected: 22.4R2-S1-EVO , < 22.4R3-EVO (semver)
guessed Create a notification for this product.
Date Public
2024-07-10 16:00
Show details on NVD website
To clipboard 

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No other releases are affected.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).\u003cbr\u003e\u003cbr\u003eWhen a device has a Layer 3 or an IRB interface configured in a VPLS instance and specific traffic is received, the evo-pfemand processes crashes which causes a service outage for the respective FPC until the system is recovered manually.\u003cbr\u003e\u003cbr\u003eThis issue only affects Junos OS Evolved 22.4R2-S1 and 22.4R2-S2 releases and is fixed in 22.4R3. No other releases are affected.\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-754\", \"description\": \"CWE-754 Improper Check for Unusual or Exceptional Conditions\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"For a device to be exposed to this issue, it need to be configued as follows:\\n\\n[ routing-instances \u003cname\u003e instance-type vpls ]\\n\\n\\n[ routing-instances \u003cname\u003e\\u00a0routing-interface irb.\u003cnumber\u003e ]\\n\\nor\\n\\n\\n\\n\\n\\n\\n\\n[ interfaces \u003cname\u003e unit \u003cunit\u003e family inet(6) ... ]\\n\\n\\n[ routing-instances \u003cname\u003e instance-type vpls ]\\n\\n\\n\\n\\n[ routing-instances \u003cname\u003e interface \u003cname\u003e.\u003cunit\u003e ]\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"For a device to be exposed to this issue, it need to be configued as follows:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ routing-instances \u0026lt;name\u0026gt; instance-type vpls ]\u003cbr\u003e\\n\\n[ routing-instances \u0026lt;name\u0026gt;\u0026nbsp;routing-interface irb.\u0026lt;number\u0026gt; ]\u003c/tt\u003e\u003cbr\u003e\u003ctt\u003e\u003cbr\u003eor\u003cbr\u003e\u003c/tt\u003e\u003cbr\u003e\u003ctt\u003e\\n\\n\\n\\n\\n\\n[ interfaces \u0026lt;name\u0026gt; unit \u0026lt;unit\u0026gt; family inet(6) ... ]\u003cbr\u003e\\n\\n[ routing-instances \u0026lt;name\u0026gt; instance-type vpls ]\u003cbr\u003e\\n\\n\\n\\n[ routing-instances \u0026lt;name\u0026gt; interface \u0026lt;name\u0026gt;.\u0026lt;unit\u0026gt; ]\u003cbr\u003e\u003c/tt\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2024-07-11T16:09:15.233Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-39535\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-07-12T18:09:51.120Z\", \"dateReserved\": \"2024-06-25T15:12:53.241Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2024-07-11T16:09:15.233Z\", \"assignerShortName\": \"juniper\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.