Vulnerability Database

346,508

Total vulnerabilities in the database

CVE-2018-0002 — juniper / junos

Improper Restriction of Operations within the Bounds of a Memory Buffer

On SRX Series and MX Series devices with a Service PIC with any ALG enabled, a crafted TCP/IP response packet processed through the device results in memory corruption leading to a flowd daemon crash. Sustained crafted response packets lead to repeated crashes of the flowd daemon which results in an extended Denial of Service condition. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D60 on SRX series; 12.3X48 versions prior to 12.3X48-D35 on SRX series; 14.1 versions prior to 14.1R9 on MX series; 14.2 versions prior to 14.2R8 on MX series; 15.1X49 versions prior to 15.1X49-D60 on SRX series; 15.1 versions prior to 15.1R5-S8, 15.1F6-S9, 15.1R6-S4, 15.1R7 on MX series; 16.1 versions prior to 16.1R6 on MX series; 16.2 versions prior to 16.2R3 on MX series; 17.1 versions prior to 17.1R2-S4, 17.1R3 on MX series. No other Juniper Networks products or platforms are affected by this issue.

  • Published: Jan 10, 2018
  • Updated: Nov 9, 2025
  • CVE: CVE-2018-0002
  • Severity: Low
  • Exploit:

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
juniper / junos 12.1x46-d30 12.1x46-d30.x
juniper / junos 12.1x46-d45 12.1x46-d45.x
juniper / junos 12.1x46-d50 12.1x46-d50.x
juniper / junos 12.1x46-d25 12.1x46-d25.x
juniper / junos 12.1x46-d35 12.1x46-d35.x
juniper / junos 12.1x46-d20 12.1x46-d20.x
juniper / junos 12.1x46-d40 12.1x46-d40.x
juniper / junos 12.1x46-d15 12.1x46-d15.x
juniper / junos 12.1x46-d10 12.1x46-d10.x
juniper / junos 12.1x46-d55 12.1x46-d55.x
juniper / junos 12.3x48-d10 12.3x48-d10.x
juniper / junos 12.3x48-d15 12.3x48-d15.x
juniper / junos 12.3x48-d30 12.3x48-d30.x
juniper / junos 12.3x48-d25 12.3x48-d25.x
juniper / junos 12.3x48-d20 12.3x48-d20.x
juniper / junos 14.1-r1 14.1-r1.x
juniper / junos 14.1-r4 14.1-r4.x
juniper / junos 14.1-r3 14.1-r3.x
juniper / junos 14.1-r8 14.1-r8.x
juniper / junos 14.1-r7 14.1-r7.x
juniper / junos 14.1-r6 14.1-r6.x
juniper / junos 14.1-r2 14.1-r2.x
juniper / junos 14.1-r5 14.1-r5.x
juniper / junos 14.2-r1 14.2-r1.x
juniper / junos 14.2-r2 14.2-r2.x
juniper / junos 14.2-r3 14.2-r3.x
juniper / junos 14.2-r6 14.2-r6.x
juniper / junos 14.2-r7 14.2-r7.x
juniper / junos 14.2-r4 14.2-r4.x
juniper / junos 14.2-r5 14.2-r5.x
juniper / junos 15.1x49-d50 15.1x49-d50.x
juniper / junos 15.1x49-d30 15.1x49-d30.x
juniper / junos 15.1x49-d35 15.1x49-d35.x
juniper / junos 15.1x49-d45 15.1x49-d45.x
juniper / junos 15.1x49-d40 15.1x49-d40.x
juniper / junos 15.1x49-d20 15.1x49-d20.x
juniper / junos 15.1x49-d10 15.1x49-d10.x
juniper / junos 15.1x49-d55 15.1x49-d55.x
juniper / junos 15.1x49-d15 15.1x49-d15.x
juniper / junos 15.1x49-d25 15.1x49-d25.x
juniper / junos 15.1-r7 15.1-r7.x
juniper / junos 15.1-r3 15.1-r3.x
juniper / junos 15.1-r4 15.1-r4.x
juniper / junos 15.1-r2 15.1-r2.x
juniper / junos 15.1-r1 15.1-r1.x
juniper / junos 15.1-r6-s4 15.1-r6-s4.x
juniper / junos 15.1-f6-s9 15.1-f6-s9.x
juniper / junos 16.1-r1 16.1-r1.x
juniper / junos 16.1-r4 16.1-r4.x
juniper / junos 16.1-r3 16.1-r3.x
juniper / junos 16.1-r5 16.1-r5.x
juniper / junos 16.1-r2 16.1-r2.x
juniper / junos 16.2-r2 16.2-r2.x
juniper / junos 16.2-r1 16.2-r1.x
juniper / junos 17.1-r3 17.1-r3.x
juniper / junos 17.1-r1 17.1-r1.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.