Cyber Resilience

CVE-2024-30403

Memory Safety in Juniper Junos Os Evolved 23.2

Memory Safety
Published
12 April 2024
Modified
06 February 2025
Patch / advisory
View advisory
CVSS Score v4 7.1
Click a component to see what it means
Raw vectorCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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
EPSS Score 0.0028 20th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2024-30403 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Juniper Junos Os Evolved. Its CVSS base score is 7.1 (High).

Operationally, ranked at the 20th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A10:2025 Mishandling of Exceptional Conditions

EU & UK References

Vulnerability Data

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). When Layer 2 traffic is sent through a logical interface, MAC…

more

learning happens. If during this process, the interface flaps, an Advanced Forwarding Toolkit manager (evo-aftmand-bt) core is observed. This leads to a PFE restart. The crash reoccurs if the same sequence of events happens, which will lead to a sustained DoS condition. This issue affects Juniper Networks Junos OS Evolved 23.2-EVO versions earlier than 23.2R1-S1-EVO, 23.2R2-EVO.

CWE(s)
CWE-476

Related Threats

CVEs Like This One

CVE-2024-21602Same product: Juniper Junos Os Evolved
CVE-2024-39562Same product: Juniper Junos Os Evolved
CVE-2025-21599Same product: Juniper Junos Os Evolved
CVE-2024-47502Same product: Juniper Junos Os Evolved
CVE-2024-21590Same product: Juniper Junos Os Evolved
CVE-2023-28978Same product: Juniper Junos Os Evolved
CVE-2024-39557Same product: Juniper Junos Os Evolved
CVE-2024-39553Same product: Juniper Junos Os Evolved
CVE-2024-39520Same product: Juniper Junos Os Evolved
CVE-2023-28973Same product: Juniper Junos Os Evolved

Affected Assets

juniper
junos os evolved
23.2

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices (static analysis, code review, safe coding standards) directly prevent NULL dereference bugs during development.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
detects

Security testing can detect NULL dereference defects before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates defensive coding practices that can prevent NULL dereferences.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify input validation and pointer-safety rules.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles encourage defensive design that avoids unsafe pointer use.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly require NULL-pointer checks and safe dereference patterns.

References