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01 Record

CVE-2024-39536

Junos OS and Junos OS Evolved: Flaps of BFD sessions with authentication cause a ppmd memory leak

MediumPUBLISHEDCNA: juniper
CNA base score6.0 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

02 Description

Junos OS and Junos OS Evolved: Flaps of BFD sessions with authentication cause a ppmd memory leak

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.22% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 13.4% of scored records. A rank, not a probability.
NVD base score
6.0 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-07-11 16:13Z2 YR AGO
Last updated
2024-08-02 04:26Z2 YR AGO
Reserved
2024-06-25
Assigning CNA
juniper
Record state
PUBLISHED
Severity
Medium (CVSS 6.0)
CNA CVSS vector
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
  • CWE-401Missing Release of Memory after Effective LifetimeVariant
Data version
5.1
Document digest
eb6e53912201bb274cb09d2341280a4c458158a68218e55868cb2fd4650dff50

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 21.2R3-S8, 21.4 to < 21.4R3-S7, 22.1 to < 22.1R3-S4, 22.2 to < 22.2R3-S4, 22.3 to < 22.3R3, 22.4 to < 22.4R2-S2, 22.4R3—
Juniper NetworksJunos OS Evolved21.2-EVO to < 21.2R3-S8-EVO, 21.4-EVO to < 21.4R3-S7-EVO, 22.2-EVO to < 22.2R3-S4-EVO, 22.3-EVO to < 22.3R3-EVO, 22.4-EVO to < 22.4R3-EVO, 23.2-EVO to < 23.2R1-EVO—
juniperjunos_os0 to < 21.2R3-S8, 21.4 to < 21.4R3-S7, 22.1 to < 22.1R3-S4, 22.2 to < 22.2R3-S4, 22.3 to < 22.3R3, 22.4 to < 22.4R2-S2, 22.4 to < 22.4R3—
juniperjunos_os_evolved21.2-EVO to < 21.2R3-S8-EVO, 21.4-EVO to < 21.4R3-S7-EVO, 22.2-EVO to < 22.2R3-S4-EVO, 22.3-EVO to < 22.3R3-EVO, 22.4-EVO to < 22.4R3-EVO, 23.2-EVO to < 23.2R1-EVO—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 21.2R3-S8, 21.4R3-S7, 22.1R3-S4, 22.2R3-S4, 22.3R3, 22.4R2-S2, 22.4R3, 23.2R1, and all subsequent releases; Junos OS Evolved: 21.2R3-S8-EVO, 21.4R3-S7-EVO, 22.2R3-S4-EVO, 22.3R3-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.