CVE-2025-21599 (GCVE-0-2025-21599)

Vulnerability from cvelistv5 – Published: 2025-01-09 16:46 – Updated: 2025-01-09 19:22
VLAI?
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the Juniper Tunnel Driver (jtd) of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to cause Denial of Service.  Receipt of specifically malformed IPv6 packets, destined to the device, causes kernel memory to not be freed, resulting in memory exhaustion leading to a system crash and Denial of Service (DoS). Continuous receipt and processing of these packets will continue to exhaust kernel memory, creating a sustained Denial of Service (DoS) condition. This issue only affects systems configured with IPv6. This issue affects Junos OS Evolved:  * from 22.4-EVO before 22.4R3-S5-EVO,  * from 23.2-EVO before 23.2R2-S2-EVO,  * from 23.4-EVO before 23.4R2-S2-EVO,  * from 24.2-EVO before 24.2R1-S2-EVO, 24.2R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 22.4R1-EVO.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Evolved Affected: 22.4-EVO , < 22.4R3-S5-EVO (semver)
Affected: 23.2-EVO , < 23.2R2-S2-EVO (semver)
Affected: 23.4-EVO , < 23.4R2-S2-EVO (semver)
Affected: 24.2-EVO , < 24.2R1-S2-EVO, 24.2R2-EVO (semver)
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\"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"base64\": false}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"The following software releases have been updated to resolve this specific issue: \\n\\nJunos OS Evolved: 22.4R3-S5-EVO, 23.2R2-S2-EVO, 23.4R2-S2-EVO, 24.2R1-S2-EVO, 24.2R2-EVO*, 24.4R1-EVO, and all subsequent releases.\\n\\n* Future Release\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"The following software releases have been updated to resolve this specific issue: \u003cbr\u003e\u003cbr\u003eJunos OS Evolved: 22.4R3-S5-EVO, 23.2R2-S2-EVO, 23.4R2-S2-EVO, 24.2R1-S2-EVO, 24.2R2-EVO*, 24.4R1-EVO, and all subsequent releases.\u003cbr\u003e\u003cbr\u003e* Future Release\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"datePublic\": \"2025-01-08T17:00:00.000Z\", \"references\": [{\"url\": \"https://supportportal.juniper.net/JSA92869\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"There are no known workarounds for this issue.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"There are no known workarounds for this issue.\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A\\u00a0Missing Release of Memory after Effective Lifetime vulnerability in the Juniper Tunnel Driver (jtd) of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to cause Denial of Service.\\u00a0\\n\\nReceipt of specifically malformed IPv6 packets, destined to the device, causes kernel memory to not be freed, resulting in memory exhaustion leading to a system crash and Denial of Service (DoS).\\u00a0Continuous receipt and processing of these packets will continue to exhaust kernel memory, creating a sustained Denial of Service (DoS) condition.\\nThis issue only affects systems configured with IPv6.\\n\\nThis issue affects Junos OS Evolved:\\u00a0\\n\\n\\n\\n  *  from 22.4-EVO before 22.4R3-S5-EVO,\\u00a0\\n  *  from 23.2-EVO before 23.2R2-S2-EVO,\\u00a0\\n  *  from 23.4-EVO before 23.4R2-S2-EVO,\\u00a0\\n  *  from 24.2-EVO before 24.2R1-S2-EVO, 24.2R2-EVO.\\n\\n\\n\\n\\nThis issue does not affect Juniper Networks Junos OS Evolved versions prior to 22.4R1-EVO.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eA\u0026nbsp;\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eMissing Release of Memory after Effective Lifetime vulnerability\u003c/span\u003e in the Juniper Tunnel Driver (jtd) of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to cause Denial of Service.\u0026nbsp;\u003cbr\u003e\u003cbr\u003eReceipt of specifically malformed IPv6 packets, destined to the device, causes kernel memory to not be freed, resulting in memory exhaustion leading to a system crash and Denial of Service (DoS).\u0026nbsp;Continuous receipt and processing of these packets will continue to exhaust kernel memory, creating a sustained Denial of Service (DoS) condition.\u003cbr\u003e\u003c/span\u003e\u003cp\u003eThis issue only affects systems configured with IPv6.\u003c/p\u003e\u003cp\u003eThis issue affects Junos OS Evolved:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003efrom 22.4-EVO before 22.4R3-S5-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2-EVO before 23.2R2-S2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4-EVO before 23.4R2-S2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.2-EVO before 24.2R1-S2-EVO, 24.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003eThis issue does not affect Juniper Networks Junos OS Evolved versions prior to 22.4R1-EVO.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"To be exposed to this vulnerability a device needs to be configured with a minimal IPv6 configuration like in the following example:\\n\\n\\u00a0 [ interfaces \u003cinterface\u003e unit \u003cunit number\u003e family inet6 ]\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"To be exposed to this vulnerability a device needs to be configured with a minimal IPv6 configuration like in the following example:\u003cbr\u003e\u003cbr\u003e\u0026nbsp; [ interfaces \u0026lt;interface\u0026gt; unit \u0026lt;unit number\u0026gt; family inet6 ]\u003cbr\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2025-01-09T16:46:57.412Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21599\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-01-09T19:22:22.119Z\", \"dateReserved\": \"2024-12-26T14:47:11.669Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2025-01-09T16:46:57.412Z\", \"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.