Vulnerability Database

346,508

Total vulnerabilities in the database

CVE-2022-22215 — juniper / junos

Missing Release of Resource after Effective Lifetime

A Missing Release of File Descriptor or Handle after Effective Lifetime vulnerability in plugable authentication module (PAM) of Juniper Networks Junos OS and Junos OS Evolved allows a locally authenticated attacker with low privileges to cause a Denial of Service (DoS). It is possible that after the termination of a gRPC connection the respective/var/run/<pid>.env file is not getting deleted which if occurring repeatedly can cause inode exhaustion. Inode exhaustion can present itself in two different ways: 1. The following log message can be observed: host kernel: pid <pid> (<process>), uid <uid> inumber <number> on /.mount/var: out of inodes which by itself is a clear indication. 2. The following log message can be observed: host <process>[<pid>]: ... : No space left on device which is not deterministic and just a representation of a write error which could have several reasons. So the following check needs to be done: user@host> show system storage no-forwarding Filesystem Size Used Avail Capacity Mounted on /dev/ada1p1 475M 300M 137M 69% /.mount/var which indicates that the write error is not actually due to a lack of disk space. If either 1. or 2. has been confirmed, then the output of: user@host> file list /var/run/*.env | count need to be checked and if it indicates a high (>10000) number of files the system has been affected by this issue. This issue affects: Juniper Networks Junos OS All versions prior to 19.1R3-S8; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S5; 19.4 versions prior to 19.4R2-S6, 19.4R3-S7; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R3-EVO; 21.1 versions prior to 21.1R3-S1-EVO; 21.2 versions prior to 21.2R1-S1-EVO, 21.2R2-EVO.

  • Published: Jul 20, 2022
  • Updated: Nov 16, 2025
  • CVE: CVE-2022-22215
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.5
  • AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
juniper / junos 19.1-r1 19.1-r1.x
juniper / junos 19.1 19.1.x
juniper / junos 19.2-r1 19.2-r1.x
juniper / junos 19.1-r1-s1 19.1-r1-s1.x
juniper / junos 19.1-r1-s3 19.1-r1-s3.x
juniper / junos 19.1-r1-s2 19.1-r1-s2.x
juniper / junos 19.2-r1-s1 19.2-r1-s1.x
juniper / junos 19.2-r1-s2 19.2-r1-s2.x
juniper / junos 19.3 19.3.x
juniper / junos 19.3-r1 19.3-r1.x
juniper / junos 19.2 19.2.x
juniper / junos 19.2-r1-s3 19.2-r1-s3.x
juniper / junos 19.4-r1 19.4-r1.x
juniper / junos 19.3-r2 19.3-r2.x
juniper / junos 19.1-r2 19.1-r2.x
juniper / junos 19.3-r2-s1 19.3-r2-s1.x
juniper / junos 19.3-r1-s1 19.3-r1-s1.x
juniper / junos 19.2-r1-s4 19.2-r1-s4.x
juniper / junos 20.1-r1 20.1-r1.x
juniper / junos 19.4-r1-s1 19.4-r1-s1.x
juniper / junos 19.3-r2-s2 19.3-r2-s2.x
juniper / junos 19.1-r1-s4 19.1-r1-s4.x
juniper / junos 19.1-r2-s1 19.1-r2-s1.x
juniper / junos 19.1-r3 19.1-r3.x
juniper / junos 19.1-r3-s1 19.1-r3-s1.x
juniper / junos 19.4-r1-s2 19.4-r1-s2.x
juniper / junos 20.1-r1-s1 20.1-r1-s1.x
juniper / junos 20.2-r1 20.2-r1.x
juniper / junos 20.1-r1-s2 20.1-r1-s2.x
juniper / junos 20.1-r1-s3 20.1-r1-s3.x
juniper / junos 19.4-r2 19.4-r2.x
juniper / junos 19.4-r2-s1 19.4-r2-s1.x
juniper / junos 19.3-r2-s3 19.3-r2-s3.x
juniper / junos 19.1-r3-s2 19.1-r3-s2.x
juniper / junos 19.2-r2 19.2-r2.x
juniper / junos 19.3-r2-s4 19.3-r2-s4.x
juniper / junos 20.2-r1-s1 20.2-r1-s1.x
juniper / junos 20.2-r1-s2 20.2-r1-s2.x
juniper / junos 19.4-r2-s2 19.4-r2-s2.x
juniper / junos 19.2-r3 19.2-r3.x
juniper / junos 19.4-r3 19.4-r3.x
juniper / junos 19.3-r2-s5 19.3-r2-s5.x
juniper / junos 19.3-r3 19.3-r3.x
juniper / junos 19.2-r1-s5 19.2-r1-s5.x
juniper / junos 19.1-r3-s3 19.1-r3-s3.x
juniper / junos 19.1-r1-s5 19.1-r1-s5.x
juniper / junos 20.3-r1 20.3-r1.x
juniper / junos 19.2-r2-s1 19.2-r2-s1.x
juniper / junos 20.1-r1-s4 20.1-r1-s4.x
juniper / junos 19.1-r3-s4 19.1-r3-s4.x
juniper / junos 20.3-r1-s1 20.3-r1-s1.x
juniper / junos 20.2-r1-s3 20.2-r1-s3.x
juniper / junos 19.2-r3-s1 19.2-r3-s1.x
juniper / junos 19.4-r3-s1 19.4-r3-s1.x
juniper / junos 19.4-r2-s3 19.4-r2-s3.x
juniper / junos 20.2-r2 20.2-r2.x
juniper / junos 20.2-r2-s1 20.2-r2-s1.x
juniper / junos 19.4-r1-s3 19.4-r1-s3.x
juniper / junos 19.2-r1-s6 19.2-r1-s6.x
juniper / junos 19.1-r2-s2 19.1-r2-s2.x
juniper / junos - 19.1
juniper / junos 20.4-r1 20.4-r1.x
juniper / junos 20.2-r2-s2 20.2-r2-s2.x
juniper / junos 20.1-r2 20.1-r2.x
juniper / junos 20.1-r2-s1 20.1-r2-s1.x
juniper / junos 20.4-r1-s1 20.4-r1-s1.x
juniper / junos 19.1-r1-s6 19.1-r1-s6.x
juniper / junos 20.2-r2-s3 20.2-r2-s3.x
juniper / junos 20.3-r2 20.3-r2.x
juniper / junos 19.3-r3-s1 19.3-r3-s1.x
juniper / junos 21.1-r1 21.1-r1.x
juniper / junos 20.4-r2 20.4-r2.x
juniper / junos 20.3-r2-s1 20.3-r2-s1.x
juniper / junos 20.2-r3 20.2-r3.x
juniper / junos 20.2-r3-s1 20.2-r3-s1.x
juniper / junos 20.1-r3 20.1-r3.x
juniper / junos 19.4-r3-s2 19.4-r3-s2.x
juniper / junos 19.4-r3-s3 19.4-r3-s3.x
juniper / junos 19.4-r3-s4 19.4-r3-s4.x
juniper / junos 19.3-r3-s2 19.3-r3-s2.x
juniper / junos 19.2-r3-s2 19.2-r3-s2.x
juniper / junos 20.1-r2-s2 20.1-r2-s2.x
juniper / junos 21.2-r1 21.2-r1.x
juniper / junos 19.1-r3-s5 19.1-r3-s5.x
juniper / junos 20.4-r2-s1 20.4-r2-s1.x
juniper / junos 21.1-r1-s1 21.1-r1-s1.x
juniper / junos 20.3-r3 20.3-r3.x
juniper / junos 19.4-r2-s4 19.4-r2-s4.x
juniper / junos 19.4-r3-s5 19.4-r3-s5.x
juniper / junos 19.4-r1-s4 19.4-r1-s4.x
juniper / junos 19.1-r3-s6 19.1-r3-s6.x
juniper / junos 19.4-r2-s5 19.4-r2-s5.x
juniper / junos 20.2-r3-s2 20.2-r3-s2.x
juniper / junos 20.1-r3-s1 20.1-r3-s1.x
juniper / junos 19.3-r3-s3 19.3-r3-s3.x
juniper / junos 19.2-r3-s3 19.2-r3-s3.x
juniper / junos 21.2-r1-s1 21.2-r1-s1.x
juniper / junos 21.1-r2 21.1-r2.x
juniper / junos 19.4-r3-s6 19.4-r3-s6.x
juniper / junos 19.1-r2-s3 19.1-r2-s3.x
juniper / junos 19.3-r2-s6 19.3-r2-s6.x
juniper / junos 19.2-r1-s7 19.2-r1-s7.x
juniper / junos 19.4 19.4.x
juniper / junos 19.1-r3-s7 19.1-r3-s7.x
juniper / junos 19.2-r3-s4 19.2-r3-s4.x
juniper / junos 19.3-r3-s4 19.3-r3-s4.x
juniper / junos 20.1-r3-s2 20.1-r3-s2.x
juniper / junos 20.2-r3-s3 20.2-r3-s3.x
juniper / junos 20.3-r3-s1 20.3-r3-s1.x
juniper / junos 20.4-r2-s2 20.4-r2-s2.x
juniper / junos 21.1-r2-s1 21.1-r2-s1.x
juniper / junos 21.2 21.2.x
juniper / junos 21.1 21.1.x
juniper / junos 20.4 20.4.x
juniper / junos 20.3 20.3.x
juniper / junos 20.2 20.2.x
juniper / junos 21.1-r2-s2 21.1-r2-s2.x
juniper / junos 21.2-r1-s2 21.2-r1-s2.x
juniper / junos 20.1-r3-s3 20.1-r3-s3.x
juniper / junos 19.2-r3-s5 19.2-r3-s5.x
juniper / junos 19.2-r1-s8 19.2-r1-s8.x
juniper / junos 20.3-r3-s2 20.3-r3-s2.x
juniper / junos 19.2-r1-s9 19.2-r1-s9.x
juniper / junos 20.2-r3-s4 20.2-r3-s4.x
juniper / junos 20.3-r1-s2 20.3-r1-s2.x
juniper / junos 20.3-r3-s3 20.3-r3-s3.x
juniper / junos_os_evolved 20.4-r1 20.4-r1.x
juniper / junos_os_evolved 21.1-r1 21.1-r1.x
juniper / junos_os_evolved 21.1-r2 21.1-r2.x
juniper / junos_os_evolved 21.1-r1-s1 21.1-r1-s1.x
juniper / junos_os_evolved 21.2-r1 21.2-r1.x
juniper / junos_os_evolved 21.1 21.1.x
juniper / junos_os_evolved 20.4-r1-s1 20.4-r1-s1.x
juniper / junos_os_evolved 20.4-r1-s2 20.4-r1-s2.x
juniper / junos_os_evolved 20.4-r2 20.4-r2.x
juniper / junos_os_evolved 20.4-r2-s1 20.4-r2-s1.x
juniper / junos_os_evolved 20.4-r2-s2 20.4-r2-s2.x
juniper / junos_os_evolved 20.4-r2-s3 20.4-r2-s3.x
juniper / junos_os_evolved 20.4 20.4.x
juniper / junos_os_evolved 21.2 21.2.x
juniper / junos_os_evolved - 20.4
juniper / junos_os_evolved 21.1-r3 21.1-r3.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.