CVE-2023-36831

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.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS22.2 < 22.2R3affected
Juniper NetworksJunos OS22.3 < 22.3R2-S1, 22.3R3affected
Juniper NetworksJunos OS22.4 < 22.4R1-S2, 22.4R2affected
Juniper NetworksJunos OSunspecified < 22.2R2unaffected

Weaknesses

  • CWE-703: CWE-703 Improper Check or Handling of Exceptional Conditions
  • Denial of Service (DoS)

Workarounds

There are no known workarounds for this issue.

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References