CVE-2024-39517 — Improper Check for Unusual or Exceptional Conditions in Networks Junos OS

CWE-754 — Improper Check for Unusual or Exceptional Conditions4 documents4 sources
Severity
7.1HIGHNVD
EPSS
0.1%
top 64.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Juniper Networks Junos OSJuniper Networks Junos OS EvolvedJuniper Junos+1 more
Timeline
PublishedJul 10
Latest updateJul 11

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) on Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS). In an EVPN/VXLAN scenario, when a high amount specific Layer 2 packets are processed by the device, it can cause the Routing Protocol Daemon (rpd) to utilize all CPU resources which causes the device to hang. A manual restart of the rpd is required to r…

CVSS vector

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

Affected Packages4 packages

▶CVEListV5juniper_networks/junos_os_evolved21.4-EVO — 21.4R3-S7-EVO+7
▶CVEListV5juniper_networks/junos_os21.4 — 21.4R3-S7+7
▶NVDjuniper/junos< 21.4+7

🔴Vulnerability Details

2
GHSA
GHSA-fc5c-g544-fmfp: An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) on Juniper Networks Junos OS and↗2024-07-11
▶
CVEList
Junos OS and Junos OS Evolved: Upon processing specific L2 traffic, rpd can hang in devices with EVPN/VXLAN configured↗2024-07-10
▶

📋Vendor Advisories

1
Juniper
CVE-2024-39517: An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) on Juniper Networks Junos OS and↗2024-07-10
▶
CVE-2024-39517 — Networks Junos OS vulnerability | cvebase