Junos Os Evolved
CVE-2024-39531
HIGH
Vulnerability Assessment
| Weakness |
CWE
|
| Impact | CVSS score of 8.7 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAI
An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-229. An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS). If a value is configured for DDoS bandwidth or burst parameters for any protocol in a queue, all protocols which share the same queue will have their bandwidth or burst value changed to the new value. If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value. So inadvertently either the control plane is open for a high level of specific traffic which was supposed to be limited to a lower value, or the limit for a certain protocol is so low that chances to succeed with a volumetric DoS attack are significantly increased.4R3-S7-EVO, * 22.1 versions before 22.1R3-S6-EVO, * 22.2 versions before 22.2R3-S3-EVO, * 22.3 versions before 22.3R3-S3-EVO, * 22.4 versions before 22.4R3-S2-EVO, * 23.2 versions before 23.2R2-EVO, * 23.4 versions before 23.4R1-S1-EVO, 23.4R2-EVO. Affected products include: Juniper Junos Os Evolved. Version information: before 21.4.
Know when Junos Os Evolved gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
Primary rating from Vendor (juniper) · only source for this CVE.
CVSS VectorVendor: juniper
DescriptionCVE.org
An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS).
If a value is configured for DDoS bandwidth or burst parameters for any protocol in a queue, all protocols which share the same queue will have their bandwidth or burst value changed to the new value. If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value. So inadvertently either the control plane is open for a high level of specific traffic which was supposed to be limited to a lower value, or the limit for a certain protocol is so low that chances to succeed with a volumetric DoS attack are significantly increased.
This issue affects Junos OS Evolved on ACX 7000 Series:
- All versions before 21.4R3-S7-EVO,
- 22.1 versions before 22.1R3-S6-EVO,
- 22.2 versions before 22.2R3-S3-EVO,
- 22.3 versions before 22.3R3-S3-EVO,
- 22.4 versions before 22.4R3-S2-EVO,
- 23.2 versions before 23.2R2-EVO,
- 23.4
versions
before 23.4R1-S1-EVO, 23.4R2-EVO.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)CVE.org
More in Junos Os Evolved
View allLocal privilege escalation in Juniper Networks Junos OS Evolved on PTX Series routers allows authenticated users with lo
An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an
An unauthenticated attacker on an adjacent Layer 2 segment can sustain a denial-of-service condition against Juniper Jun
An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allow
Unauthenticated OS command injection in Juniper Networks Junos OS Evolved's bootzd zero-touch provisioning (ZTP) daemon
An improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved Routing Protoc
Authenticated, low-privileged TACACS+ users on Juniper Networks Junos OS Evolved can escalate to root and execute arbitr
A Missing Release of File Descriptor or Handle after Effective Lifetime vulnerability in plugable authentication module
Unauthenticated OS command injection in the bootzd zero-touch provisioning (ZTP) daemon of Juniper Networks Junos OS Evo
OS command injection in the phcd phone-home daemon of Juniper Networks Junos OS and Junos OS Evolved lets an adjacent, u
Heap-based buffer overflow in the sdxd service-deployment daemon of Juniper Networks Junos OS and Junos OS Evolved allow
Unauthenticated remote code execution with elevated privileges is possible in Juniper Junos OS and Junos OS Evolved thro
GitHub PoC
Exploit-DB