CVE-2023-22392
Junos OS: PTX Series and QFX10000 Series: Received flow-routes which aren't installed as the hardware doesn't support them, lead to an FPC heap memory leak
A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).
PTX3000, PTX5000, QFX10000, PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs do not support certain flow-routes. Once a flow-route is received over an established BGP session and an attempt is made to install the resulting filter into the PFE, FPC heap memory is leaked. The FPC heap memory can be monitored using the CLI command "show chassis fpc".
The following syslog messages can be observed if the respective filter derived from a flow-route cannot be installed.
expr_dfw_sfm_range_add:661 SFM packet-length Unable to get a sfm entry for updating the hw expr_dfw_hw_sfm_add:750 Unable to add the filter secondarymatch to the hardware expr_dfw_base_hw_add:52 Failed to add h/w sfm data. expr_dfw_base_hw_create:114 Failed to add h/w data. expr_dfw_base_pfe_inst_create:241 Failed to create base inst for sfilter 0 on PFE 0 for flowspec_default_inet expr_dfw_flt_inst_change:1368 Failed to create flowspec_default_inet on PFE 0 expr_dfw_hw_pgm_fnum:465 dfw_pfe_inst_old not found for pfe_index 0! expr_dfw_bp_pgm_flt_num:548 Failed to pgm bind-point in hw: generic failure expr_dfw_bp_topo_handler:1102 Failed to program fnum. expr_dfw_entry_process_change:679 Failed to change instance for filter flowspec_default_inet. This issue affects Juniper Networks Junos OS:
on PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs:
- All versions prior to 20.4R3-S5;
- 21.1 versions prior to 21.1R3-S4;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3;
- 21.4 versions prior to 21.4R2-S2, 21.4R3;
- 22.1 versions prior to 22.1R1-S2, 22.1R2.
on PTX3000, PTX5000, QFX10000:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S6;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R3-S4;
- 22.1 versions prior to 22.1R3-S3
- 22.2 versions prior to 22.2R3-S1
- 22.3 versions prior to 22.3R2-S2, 22.3R3
- 22.4 versions prior to 22.4R2.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Junos OS: PTX Series and QFX10000 Series: Received flow-routes which aren't installed as the hardware doesn't support them, lead to an FPC heap memory leak
A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).
PTX3000, PTX5000, QFX10000, PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs do not support certain flow-routes. Once a flow-route is received over an established BGP session and an attempt is made to install the resulting filter into the PFE, FPC heap memory is leaked. The FPC heap memory can be monitored using the CLI command "show chassis fpc".
The following syslog messages can be observed if the respective filter derived from a flow-route cannot be installed.
expr_dfw_sfm_range_add:661 SFM packet-length Unable to get a sfm entry for updating the hw expr_dfw_hw_sfm_add:750 Unable to add the filter secondarymatch to the hardware expr_dfw_base_hw_add:52 Failed to add h/w sfm data. expr_dfw_base_hw_create:114 Failed to add h/w data. expr_dfw_base_pfe_inst_create:241 Failed to create base inst for sfilter 0 on PFE 0 for flowspec_default_inet expr_dfw_flt_inst_change:1368 Failed to create flowspec_default_inet on PFE 0 expr_dfw_hw_pgm_fnum:465 dfw_pfe_inst_old not found for pfe_index 0! expr_dfw_bp_pgm_flt_num:548 Failed to pgm bind-point in hw: generic failure expr_dfw_bp_topo_handler:1102 Failed to program fnum. expr_dfw_entry_process_change:679 Failed to change instance for filter flowspec_default_inet. This issue affects Juniper Networks Junos OS:
on PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs:
- All versions prior to 20.4R3-S5;
- 21.1 versions prior to 21.1R3-S4;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3;
- 21.4 versions prior to 21.4R2-S2, 21.4R3;
- 22.1 versions prior to 22.1R1-S2, 22.1R2.
on PTX3000, PTX5000, QFX10000:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S6;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R3-S4;
- 22.1 versions prior to 22.1R3-S3
- 22.2 versions prior to 22.2R3-S1
- 22.3 versions prior to 22.3R2-S2, 22.3R3
- 22.4 versions prior to 22.4R2.
- Record
CVE-2023-22392- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
EUVDEUVD-2023-26555
A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).
PTX3000, PTX5000, QFX10000, PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs do not support certain flow-routes. Once a flow-route is received over an established BGP session and an attempt is made to install the resulting filter into the PFE, FPC heap memory is leaked. The FPC heap memory can be monitored using the CLI command "show chassis fpc".
The following syslog messages can be observed if the respective filter derived from a flow-route cannot be installed.
expr_dfw_sfm_range_add:661 SFM packet-length Unable to get a sfm entry for updating the hw expr_dfw_hw_sfm_add:750 Unable to add the filter secondarymatch to the hardware expr_dfw_base_hw_add:52 Failed to add h/w sfm data. expr_dfw_base_hw_create:114 Failed to add h/w data. expr_dfw_base_pfe_inst_create:241 Failed to create base inst for sfilter 0 on PFE 0 for flowspec_default_inet expr_dfw_flt_inst_change:1368 Failed to create flowspec_default_inet on PFE 0 expr_dfw_hw_pgm_fnum:465 dfw_pfe_inst_old not found for pfe_index 0! expr_dfw_bp_pgm_flt_num:548 Failed to pgm bind-point in hw: generic failure expr_dfw_bp_topo_handler:1102 Failed to program fnum. expr_dfw_entry_process_change:679 Failed to change instance for filter flowspec_default_inet. This issue affects Juniper Networks Junos OS:
on PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs:
- All versions prior to 20.4R3-S5;
- 21.1 versions prior to 21.1R3-S4;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3;
- 21.4 versions prior to 21.4R2-S2, 21.4R3;
- 22.1 versions prior to 22.1R1-S2, 22.1R2.
on PTX3000, PTX5000, QFX10000:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S6;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R3-S4;
- 22.1 versions prior to 22.1R3-S3
- 22.2 versions prior to 22.2R3-S1
- 22.3 versions prior to 22.3R2-S2, 22.3R3
- 22.4 versions prior to 22.4R2.
- Record
EUVD-2023-26555- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-rfgp-826j-vp9f
A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding...
A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).
PTX3000, PTX5000, QFX10000, PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs do not support certain flow-routes. Once a flow-route is received over an established BGP session and an attempt is made to install the resulting filter into the PFE, FPC heap memory is leaked. The FPC heap memory can be monitored using the CLI command "show chassis fpc".
The following syslog messages can be observed if the respective filter derived from a flow-route cannot be installed.
expr_dfw_sfm_range_add:661 SFM packet-length Unable to get a sfm entry for updating the hw expr_dfw_hw_sfm_add:750 Unable to add the filter secondarymatch to the hardware expr_dfw_base_hw_add:52 Failed to add h/w sfm data. expr_dfw_base_hw_create:114 Failed to add h/w data. expr_dfw_base_pfe_inst_create:241 Failed to create base inst for sfilter 0 on PFE 0 for flowspec_default_inet expr_dfw_flt_inst_change:1368 Failed to create flowspec_default_inet on PFE 0 expr_dfw_hw_pgm_fnum:465 dfw_pfe_inst_old not found for pfe_index 0! expr_dfw_bp_pgm_flt_num:548 Failed to pgm bind-point in hw: generic failure expr_dfw_bp_topo_handler:1102 Failed to program fnum. expr_dfw_entry_process_change:679 Failed to change instance for filter flowspec_default_inet. This issue affects Juniper Networks Junos OS:
on PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs:
- All versions prior to 20.4R3-S5;
- 21.1 versions prior to 21.1R3-S4;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3;
- 21.4 versions prior to 21.4R2-S2, 21.4R3;
- 22.1 versions prior to 22.1R1-S2, 22.1R2.
on PTX3000, PTX5000, QFX10000:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S6;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R3-S4;
- 22.1 versions prior to 22.1R3-S3
- 22.2 versions prior to 22.2R3-S1
- 22.3 versions prior to 22.3R2-S2, 22.3R3
- 22.4 versions prior to 22.4R2.
- Record
GHSA-rfgp-826j-vp9f- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
NVD
A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).
PTX3000, PTX5000, QFX10000, PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs do not support certain flow-routes. Once a flow-route is received over an established BGP session and an attempt is made to install the resulting filter into the PFE, FPC heap memory is leaked. The FPC heap memory can be monitored using the CLI command "show chassis fpc".
The following syslog messages can be observed if the respective filter derived from a flow-route cannot be installed.
expr_dfw_sfm_range_add:661 SFM packet-length Unable to get a sfm entry for updating the hw expr_dfw_hw_sfm_add:750 Unable to add the filter secondarymatch to the hardware expr_dfw_base_hw_add:52 Failed to add h/w sfm data. expr_dfw_base_hw_create:114 Failed to add h/w data. expr_dfw_base_pfe_inst_create:241 Failed to create base inst for sfilter 0 on PFE 0 for flowspec_default_inet expr_dfw_flt_inst_change:1368 Failed to create flowspec_default_inet on PFE 0 expr_dfw_hw_pgm_fnum:465 dfw_pfe_inst_old not found for pfe_index 0! expr_dfw_bp_pgm_flt_num:548 Failed to pgm bind-point in hw: generic failure expr_dfw_bp_topo_handler:1102 Failed to program fnum. expr_dfw_entry_process_change:679 Failed to change instance for filter flowspec_default_inet. This issue affects Juniper Networks Junos OS:
on PTX1000, PTX10002, and PTX10004, PTX10008 and PTX10016 with LC110x FPCs:
- All versions prior to 20.4R3-S5;
- 21.1 versions prior to 21.1R3-S4;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3;
- 21.4 versions prior to 21.4R2-S2, 21.4R3;
- 22.1 versions prior to 22.1R1-S2, 22.1R2.
on PTX3000, PTX5000, QFX10000:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S6;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R3-S4;
- 22.1 versions prior to 22.1R3-S3
- 22.2 versions prior to 22.2R3-S1
- 22.3 versions prior to 22.3R2-S2, 22.3R3
- 22.4 versions prior to 22.4R2.
- Record
CVE-2023-22392- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-22392 is a medium vulnerability (CVSS 6.5) in Juniper Junos, published October 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 24th percentile. No source names a fixed version.