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Full vulnerability report · 2024
CVE-2024-39544High confidence

Junos OS Evolved: Low privileged local user able to view NETCONF traceoptions files

Juniper Networks · Junos OS Evolved

5.1MediumCVSS 4.0
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 11 Oct 2024

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.20% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Juniper Networks Junos OS Evolved and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2024-38070

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

An Incorrect Default Permissions vulnerability in the command line interface (CLI) of Juniper Networks Junos OS Evolved allows a low privileged local attacker to view NETCONF traceoptions files, representing an exposure of sensitive information. On all Junos OS Evolved platforms, when NETCONF traceoptions are configured, NETCONF traceoptions files get created with an incorrect group permission, which allows a low-privileged user can access sensitive information compromising the confidentiality of the system. Junos OS Evolved:  * All versions before 20.4R3-S9-EVO,  * 21.2-EVO before 21.2R3-S7-EVO,  * 21.4-EVO before 21.4R3-S5-EVO,  * 22.1-EVO before 22.1R3-S5-EVO,  * 22.2-EVO before 22.2R3-S3-EVO,  * 22.3-EVO before 22.3R3-EVO, 22.3R3-S2-EVO,  * 22.4-EVO before 22.4R3-EVO,  * 23.2-EVO before 23.2R1-S2-EVO, 23.2R2-EVO.

What

An Incorrect Default Permissions vulnerability in the command line interface (CLI) of Juniper Networks Junos OS Evolved allows a low privileged local attacker to view NETCONF traceoptions files, representing an exposure of sensitive information. On all Junos OS Evolved platforms, when NETCONF traceoptions are configured, NETCONF traceoptions files get created with an incorrect group permission, which allows a low-privileged user can access sensitive information compromising the confidentiality of the system. Junos OS Evolved:  * All versions before 20.4R3-S9-EVO,  * 21.2-EVO before 21.2R3-S7-EVO,  * 21.4-EVO before 21.4R3-S5-EVO,  * 22.1-EVO before 22.1R3-S5-EVO,  * 22.2-EVO before 22.2R3-S3-EVO,  * 22.3-EVO before 22.3R3-EVO, 22.3R3-S2-EVO,  * 22.4-EVO before 22.4R3-EVO,  * 23.2-EVO before 23.2R1-S2-EVO, 23.2R2-EVO.

Why

During installation, installed file permissions are set to allow anyone to modify those files.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

What

An Incorrect Default Permissions vulnerability in the command line interface (CLI) of Juniper Networks Junos OS Evolved allows a low privileged local attacker to view NETCONF traceoptions files, representing an exposure of sensitive information. On all Junos OS Evolved platforms, when NETCONF traceoptions are configured, NETCONF traceoptions files get created with an incorrect group permission, which allows a low-privileged user can access sensitive information compromising the confidentiality of the system. Junos OS Evolved:  * All versions before 20.4R3-S9-EVO,  * 21.2-EVO before 21.2R3-S7-EVO,  * 21.4-EVO before 21.4R3-S5-EVO,  * 22.1-EVO before 22.1R3-S5-EVO,  * 22.2-EVO before 22.2R3-S3-EVO,  * 22.3-EVO before 22.3R3-EVO, 22.3R3-S2-EVO,  * 22.4-EVO before 22.4R3-EVO,  * 23.2-EVO before 23.2R1-S2-EVO, 23.2R2-EVO.

Why

During installation, installed file permissions are set to allow anyone to modify those files.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may obtain information outside the intended access boundary.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Incorrect Default Permissions → obtain information outside the intended access boundary
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
Passive interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-276 ↗

CWE-276: Incorrect Default Permissions. During installation, installed file permissions are set to allow anyone to modify those files.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRLowPrivileges required: The attacker needs basic user-level privileges.UIPassiveUser interaction: A user must unknowingly interact with the vulnerable system.VCHighVulnerable-system confidentiality: A successful attack can cause a major loss.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VANoneVulnerable-system availability: No direct loss is represented by this metric.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-276
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2024-3140Juniper JUNOS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um Denial-of-Service-Zustände herbeizuführen, Informationen preiszugeben, Code auszuführen, Privilegien zu erweitern und Sicherheitsmechanismen zu umgehen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20241016Security Bulletin 16 Oct 2024

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 16 Oct 2024, published on 16 October 2024. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0866Multiples vulnérabilités dans les produits Juniper Networks

JSA88104 du 09 octobre 2024 https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-OS-SRX-Series-Low-privileged-user-able-to-access-sensitive-information-on-file-system-CVE-2024-39527 Bulletin de sécurité Juniper Networks JSA88105 du 09 octobre 2024 https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-OS-Evolved-Connections-to-the-network-and-broadcast-address-accepted-CVE-2024-39534 Bulletin de sécurité Juniper Networks JSA88106 du 09 octobre 2024 https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-OS-Evolved-Low-privileged-local-user-able-to-view-NETCONF-traceoptions-files-CVE-2024-39544 Bulletin de sécurité Juniper Networks JSA88107 du 09 octobre 2024 https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-OS-Multiple-vulnerabilities-resolved-in-OpenSSL Bulletin de sécurité Juniper Networks JSA88108 du 09 octobre 2024 https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-cRPD-Receipt-of-crafted-TCP-traffic-can-trigger-high-CPU-utilization-CVE-2024-39547 Bulletin de sécurité Juniper Networks JSA88110 du 09 octobre 2024 https://supportportal.juniper.net/s/article/2024-10-Security-Bulletin-Junos-Space-Remote-Command-Execution-RCE-vulnerability-in-web-application

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2024-029964ジュニパーネットワークスのJunos OS Evolvedにおける不適切なデフォルトパーミッションに関する脆弱性

Juniper Networks Junos OS Evolvedのコマンドラインインターフェース（CLI）における不適切なデフォルト権限の脆弱性により、権限の低いローカル攻撃者がNETCONFのtraceoptionsファイルを閲覧でき、機密情報が露出する可能性があります。すべてのJunos OS Evolvedプラットフォームでは、NETCONF traceoptionsが設定されると、NETCONF traceoptionsファイルが誤ったグループ権限で作成され、権限の低いユーザーが機密情報にアクセスできるため、システムの機密性が損なわれます。影響を受けるJunos OS Evolvedのバージョンは以下の通りです。- 20.4R3-S9-EVO未満のすべてのバージョン、- 21.2-EVOの21.2R3-S7-EVO未満、- 21.4-EVOの21.4R3-S5-EVO未満、- 22.1-EVOの22.1R3-S5-EVO未満、- 22.2-EVOの22.2R3-S3-EVO未満、- 22.3-EVOの22.3R3-EVOおよび22.3R3-S2-EVO未満、- 22.4-EVOの22.4R3-EVO未満、- 23.2-EVOの23.2R1-S2-EVOおよび23.2R2-EVO未満です。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Junos OS Evolved: < 20.4R3-S9-EVO, 21.2-EVO < 21.2R3-S7-EVO, 21.4-EVO < 21.4R3-S5-EVO, 22.1-EVO < 22.1R3-S5-EVO, 22.2-EVO < 22.2R3-S3-EVO, 22.3-EVO < 22.3R3-S2-EVO, 22.4-EVO < 22.4R3-EVO, 23.2-EVO < 23.2R1-S2-EVO, 23.2R2-EVO
Fixed
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 11 Oct 2024 · Last source change 11 Oct 2024, 18:59 UTC · CWE-276 · Incorrect Default Permissions

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2024-38070
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2024-38070↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2024-39544 · cve.blacktree.nl