Cyber Resilience

CVE-2023-1697

Juniper Junos ≤ 19.4

Published
17 April 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0032 24th percentile
Risk Priority 49 floored blend · peak EPSS

Summary

CVE-2023-1697 is a medium-severity Improper Handling of Missing Values (CWE-230) vulnerability in Juniper Junos. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 24th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

An Improper Handling of Missing Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows an adjacent, unauthenticated attacker to cause a dcpfe process core and thereby a Denial of Service (DoS). Continued receipt of these…

more

specific frames will cause a sustained Denial of Service condition. This issue occurs when a specific malformed ethernet frame is received. This issue affects Juniper Networks Junos OS on QFX10000 Series, PTX1000 Series Series: All versions prior to 19.4R3-S10; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S1; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2.

CWE(s)
CWE-230NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-22403Same product: Juniper Junos
CVE-2024-21616Same product: Juniper Junos
CVE-2023-36843Same product: Juniper Junos
CVE-2025-59980Same product: Juniper Junos
CVE-2024-39542Same product: Juniper Junos
CVE-2024-21598Same product: Juniper Junos
CVE-2023-36835Same product: Juniper Junos
CVE-2023-22414Same product: Juniper Junos
CVE-2024-21595Same product: Juniper Junos
CVE-2026-21917Same product: Juniper Junos

Affected Assets

juniper
junos
19.4, 20.1, 20.2, 20.3, 20.4 · ≤ 19.4

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

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Detect
Catch it (NIST detect / respond)

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Harden
Shrink the surface (DISA STIG)
  • 7 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)

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Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and null/missing-value handling during coding and review.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect missing-value flaws but does not itself prevent them.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate explicit handling of missing parameter values.

A.8.28 Secure coding partial match
prevents

Secure coding standards can require validation that every supplied parameter has a non-null value.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (4 rules)
  • V-248714 OL 8 must not allow accounts configured with blank or null passwords. prevents CWE-230
  • V-248715 OL 8 must not allow blank or null passwords in the system-auth file. prevents CWE-230
  • V-248716 OL 8 must not allow blank or null passwords in the password-auth file. prevents CWE-230
RHEL 7 (1 rule)
  • V-204424 The Red Hat Enterprise Linux operating system must not allow accounts configured with blank or null passwords. prevents CWE-230
Ubuntu 24.04 (1 rule)
  • V-270714 Ubuntu 24.04 LTS must not allow accounts configured in Pluggable Authentication Modules (PAM) with blank or null passwords. prevents CWE-230

References