NULL pointer dereference in Juniper Junos OS Evolved
CVE-2024-30403
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 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Juniper Junos OS Evolved — versions 23.2
- Juniper Networks Junos OS Evolved — versions 23.2-EVO
Weakness classification (CWE)
Public proof-of-concept exploits
References
- supportportal.juniper.net/JSA79181 (vendor-advisory, Vendor Advisory)
- www.first.org/cvss/calculator/4.0 (technical-description, Issue Tracking)
Frequently asked questions
- What is CVE-2024-30403?
- CVE-2024-30403 is a medium-severity vulnerability in Juniper Junos OS Evolved, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2024-04-12.
- How severe is CVE-2024-30403?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2024-30403 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.