Vulnerability Database

346,508

Total vulnerabilities in the database

CVE-2018-0030 — juniper / junos

Uncontrolled Resource Consumption

Receipt of a specific MPLS packet may cause MPC7/8/9, PTX-FPC3 (FPC-P1, FPC-P2) line cards or PTX1K to crash and restart. By continuously sending specific MPLS packets, an attacker can repeatedly crash the line cards or PTX1K causing a sustained Denial of Service. Affected releases are Juniper Networks Junos OS with MPC7/8/9 or PTX-FPC3 (FPC-P1, FPC-P2) installed and PTX1K: 15.1F versions prior to 15.1F6-S10; 15.1 versions prior to 15.1R4-S9, 15.1R6-S6, 15.1R7; 16.1 versions prior to 16.1R3-S8, 16.1R4-S9, 16.1R5-S4, 16.1R6-S3, 16.1R7; 16.1X65 versions prior to 16.1X65-D46; 16.2 versions prior to 16.2R1-S6, 16.2R2-S5, 16.2R3; 17.1 versions prior to 17.1R1-S7, 17.1R2-S7, 17.1R3; 17.2 versions prior to 17.2R1-S4, 17.2R2-S4, 17.2R3; 17.2X75 versions prior to 17.2X75-D70, 17.2X75-D90; 17.3 versions prior to 17.3R1-S4, 17.3R2, 17.4 versions prior to 17.4R1-S2, 17.4R2. Refer to KB25385 for more information about PFE line cards.

  • Published: Jul 11, 2018
  • Updated: Nov 9, 2025
  • CVE: CVE-2018-0030
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
juniper / junos 15.1-f4 15.1-f4.x
juniper / junos 15.1-f6 15.1-f6.x
juniper / junos 15.1-f2 15.1-f2.x
juniper / junos 15.1-f3 15.1-f3.x
juniper / junos 15.1-f5 15.1-f5.x
juniper / junos 15.1-f 15.1-f.x
juniper / junos 15.1-r7 15.1-r7.x
juniper / junos 15.1-r2 15.1-r2.x
juniper / junos 15.1-r1 15.1-r1.x
juniper / junos 15.1 15.1.x
juniper / junos 15.1-r6-s6 15.1-r6-s6.x
juniper / junos 16.1-r1 16.1-r1.x
juniper / junos 16.1 16.1.x
juniper / junos 16.1-r3 16.1-r3.x
juniper / junos 16.1-r2 16.1-r2.x
juniper / junos 16.1-r5-s4 16.1-r5-s4.x
juniper / junos 16.1-r7 16.1-r7.x
juniper / junos 16.1-r4-s9 16.1-r4-s9.x
juniper / junos 16.1-r6-s3 16.1-r6-s3.x
juniper / junos 16.1x65 16.1x65.x
juniper / junos 16.1x65-d30 16.1x65-d30.x
juniper / junos 16.1x65-d35 16.1x65-d35.x
juniper / junos 16.1x65-d40 16.1x65-d40.x
juniper / junos 16.2-r3 16.2-r3.x
juniper / junos 16.2 16.2.x
juniper / junos 16.2-r1 16.2-r1.x
juniper / junos 16.2-r2-s5 16.2-r2-s5.x
juniper / junos 17.1-r3 17.1-r3.x
juniper / junos 17.1-r1 17.1-r1.x
juniper / junos 17.1 17.1.x
juniper / junos 17.1-r2-s7 17.1-r2-s7.x
juniper / junos 17.2 17.2.x
juniper / junos 17.2-r1 17.2-r1.x
juniper / junos 17.2-r3 17.2-r3.x
juniper / junos 17.2-r2-s4 17.2-r2-s4.x
juniper / junos 17.3-r1 17.3-r1.x
juniper / junos 17.3 17.3.x
juniper / junos 17.3-r2 17.3-r2.x
juniper / junos 17.4 17.4.x
juniper / junos 17.4-r1 17.4-r1.x
juniper / junos 17.4-r2 17.4-r2.x
juniper / junos 17.2x75 17.2x75.x
juniper / junos 17.2x75-d90 17.2x75-d90.x

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.