FKIE_CVE-2023-36831

Vulnerability from fkie_nvd - Published: 2023-07-14 15:15 - Updated: 2026-06-17 06:07
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An Improper Check or Handling of Exceptional Conditions vulnerability in the UTM (Unified Threat Management) Web-Filtering feature of Juniper Networks Junos OS on SRX Series causes a jbuf memory leak to occur when accessing certain websites, eventually leading to a Denial of Service (DoS) condition. Service restoration is only possible by rebooting the system. The jbuf memory leak only occurs in SSL Proxy and UTM Web-Filtering configurations. Other products, platforms, and configurations are not affected by this vulnerability. This issue affects Juniper Networks Junos OS on SRX Series: 22.2 versions prior to 22.2R3; 22.3 versions prior to 22.3R2-S1, 22.3R3; 22.4 versions prior to 22.4R1-S2, 22.4R2. This issue does not affect Juniper Networks Junos OS versions prior to 22.2R2.
References
sirt@juniper.nethttps://supportportal.juniper.net/JSA71636Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://supportportal.juniper.net/JSA71636Vendor Advisory
Impacted products
Vendor Product Version
juniper junos 22.2
juniper junos 22.2
juniper junos 22.2
juniper junos 22.2
juniper junos 22.2
juniper junos 22.2
juniper junos 22.3
juniper junos 22.3
juniper junos 22.3
juniper junos 22.3
juniper junos 22.4
juniper junos 22.4
juniper vsrx -
juniper csrx -
juniper srx100 -
juniper srx110 -
juniper srx1400 -
juniper srx1500 -
juniper srx210 -
juniper srx220 -
juniper srx240 -
juniper srx240h2 -
juniper srx240m -
juniper srx300 -
juniper srx320 -
juniper srx340 -
juniper srx3400 -
juniper srx345 -
juniper srx3600 -
juniper srx380 -
juniper srx4000 -
juniper srx4100 -
juniper srx4200 -
juniper srx4600 -
juniper srx5000 -
juniper srx5400 -
juniper srx550 -
juniper srx550_hm -
juniper srx550m -
juniper srx5600 -
juniper srx5800 -
juniper srx650 -
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Improper Check or Handling of Exceptional Conditions vulnerability in the UTM (Unified Threat Management) Web-Filtering feature of Juniper Networks Junos OS on SRX Series causes a jbuf memory leak to occur when accessing certain websites, eventually leading to a Denial of Service (DoS) condition.  Service restoration is only possible by rebooting the system.\n\nThe jbuf memory leak only occurs in SSL Proxy and UTM Web-Filtering configurations.  Other products, platforms, and configurations are not affected by this vulnerability.\n\nThis issue affects Juniper Networks Junos OS on SRX Series:\n22.2 versions prior to 22.2R3;\n22.3 versions prior to 22.3R2-S1, 22.3R3;\n22.4 versions prior to 22.4R1-S2, 22.4R2.\n\nThis issue does not affect Juniper Networks Junos OS versions prior to 22.2R2.\n"
    }
  ],
  "id": "CVE-2023-36831",
  "lastModified": "2026-06-17T06:07:10.310",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "sirt@juniper.net",
        "type": "Secondary"
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    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-36831",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-11-07T14:39:03.046485Z",
          "version": "2.0.3"
        }
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    ]
  },
  "published": "2023-07-14T15:15:08.913",
  "references": [
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      "source": "sirt@juniper.net",
      "tags": [
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      "url": "https://supportportal.juniper.net/JSA71636"
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  "sourceIdentifier": "sirt@juniper.net",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-703"
        }
      ],
      "source": "sirt@juniper.net",
      "type": "Secondary"
    }
  ]
}



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