Vulnerability Details CVE-2023-36831
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 41.1%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2023-36831
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cpe:2.3:a:juniper:vsrx:-
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cpe:2.3:h:juniper:csrx:-
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cpe:2.3:h:juniper:srx100:-
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cpe:2.3:h:juniper:srx110:-
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cpe:2.3:h:juniper:srx1400:-
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cpe:2.3:h:juniper:srx1500:-
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cpe:2.3:h:juniper:srx210:-
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cpe:2.3:h:juniper:srx220:-
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cpe:2.3:h:juniper:srx240:-
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cpe:2.3:h:juniper:srx240h2:-
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cpe:2.3:h:juniper:srx240m:-
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cpe:2.3:h:juniper:srx300:-
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cpe:2.3:h:juniper:srx320:-
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cpe:2.3:h:juniper:srx3400:-
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cpe:2.3:h:juniper:srx340:-
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cpe:2.3:h:juniper:srx345:-
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cpe:2.3:h:juniper:srx3600:-
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cpe:2.3:h:juniper:srx380:-
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cpe:2.3:h:juniper:srx4000:-
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cpe:2.3:h:juniper:srx4100:-
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cpe:2.3:h:juniper:srx4200:-
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cpe:2.3:h:juniper:srx4600:-
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cpe:2.3:h:juniper:srx5000:-
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cpe:2.3:h:juniper:srx5400:-
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cpe:2.3:h:juniper:srx550:-
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cpe:2.3:h:juniper:srx550_hm:-
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cpe:2.3:h:juniper:srx550m:-
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cpe:2.3:h:juniper:srx5600:-
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cpe:2.3:h:juniper:srx5800:-
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cpe:2.3:h:juniper:srx650:-
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cpe:2.3:o:juniper:junos:22.2
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cpe:2.3:o:juniper:junos:22.3
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cpe:2.3:o:juniper:junos:22.4