NULL pointer dereference in Juniper Junos OS Evolved
CVE-2024-21602
A NULL Pointer Dereference vulnerability in Juniper Networks Junos OS Evolved on ACX7024, ACX7100-32C and ACX7100-48L allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). If a specific IPv4 UDP packet is received and sent to the Routing Engine (RE) packetio crashes and restarts which causes a momentary traffic interruption. Continued receipt of such packets will lead to a sustained DoS. This issue does not happen with IPv6 packets. This issue affects Juniper Networks Junos OS Evolved on ACX7024, ACX7100-32C and ACX7100-48L: * 21.4-EVO versions earlier than 21.4R3-S6-EVO; * 22.1-EVO versions earlier than 22.1R3-S5-EVO; * 22.2-EVO versions earlier than 22.2R2-S1-EVO, 22.2R3-EVO; * 22.3-EVO versions earlier than 22.3R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions earlier than 21.4R1-EVO.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 42.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Juniper Junos OS Evolved — versions 21.4, 22.1, 22.2
- Juniper Networks Junos OS Evolved — versions 21.4-EVO, 22.1-EVO, 22.2-EVO
Weakness classification (CWE)
References
- supportportal.juniper.net/JSA75743 (vendor-advisory, Vendor Advisory)
- www.first.org/cvss/calculator/4.0 (technical-description, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-21602?
- CVE-2024-21602 is a high-severity vulnerability in Juniper Junos OS Evolved, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2024-01-12.
- How severe is CVE-2024-21602?
- High severity. CVSS v3 base score is 7.5 out of 10.