A Missing Release of Memory after Effective Lifetime vulnerability in the DHCP daemon (jdhcpd) of Juniper Networks Junos OS on MX Series, allows an adjacent, unauthenticated attacker to cause a memory leak, that will eventually cause a complete Denial-of-Service (DoS). In a DHCPv6 over PPPoE, or DHCPv6 over VLAN with Active lease query or Bulk lease query scenario, every subscriber logout will leak a small amount of memory. When all available memory has been exhausted, jdhcpd will crash and restart which causes a complete service impact until the process has recovered.
The memory usage of jdhcpd can be monitored with: user@host> show system processes extensive | match jdhcpd This issue affects Junos OS: * all versions before 22.4R3-S1, * 23.2 versions before 23.2R2, * 23.4 versions before 23.4R2.
Attack Parameters
Impact Assessment
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 28
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
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Juniper Junos
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
|
— |
22.4
|
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Juniper Junos
cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*
|
— | — |
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Juniper Junos
cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:*
|
— | — |
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Juniper Junos
cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*
|
— | — |
|
Juniper Junos
cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*
|
— | — |
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Juniper Junos
cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*
|
— | — |
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Juniper Junos
cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*
|
— | — |
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Juniper Mx10004
cpe:2.3:h:juniper:mx10004:-:*:*:*:*:*:*:*
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— | — |
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Juniper Mx10008
cpe:2.3:h:juniper:mx10008:-:*:*:*:*:*:*:*
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— | — |
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Juniper Mx2008
cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:*
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— | — |
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Juniper Mx2010
cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:*
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— | — |
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Juniper Mx2020
cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:*
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— | — |
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Juniper Mx204
cpe:2.3:h:juniper:mx204:-:*:*:*:*:*:*:*
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— | — |
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Juniper Mx240
cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:*
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— | — |
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Juniper Mx301
cpe:2.3:h:juniper:mx301:-:*:*:*:*:*:*:*
|
— | — |
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Juniper Mx304
cpe:2.3:h:juniper:mx304:-:*:*:*:*:*:*:*
|
— | — |
|
Juniper Mx480
cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:*
|
— | — |
|
Juniper Mx960
cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:*
|
— | — |