Vulnerability-Lookup

VAR-202110-1550

Vulnerability from variot - Updated: 2024-08-14 14:18

An improper privilege management vulnerability in the Juniper Networks Junos OS and Junos OS Evolved command-line interpreter (CLI) allows a low-privileged user to overwrite local files as root, possibly leading to a system integrity issue or Denial of Service (DoS). Depending on the files overwritten, exploitation of this vulnerability could lead to a sustained Denial of Service (DoS) condition, requiring manual user intervention to recover. Systems are only vulnerable if jdhcpd is running, which can be confirmed via the 'show system processes' command. For example: root@host# run show system processes extensive | match dhcp 26537 root -16 0 97568K 13692K RUN 0 0:01 3.71% jdhcpd This issue affects: Juniper Networks Junos OS: All versions, including the following supported releases: 15.1 versions prior to 15.1R7-S10; 17.4 versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S6, 19.3R3-S3; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO; All versions of 21.1-EVO. The operating system provides a secure programming interface and Junos SDK. There is no relevant information about this vulnerability at present. Please pay attention to CNNVD or manufacturer announcements at any time

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        "id": "CNNVD-202110-960"
      }
    ],
    "trust": 0.6
  }
}

CVE-2021-31360 (GCVE-0-2021-31360)

Vulnerability from cvelistv5 – Published: 2021-10-19 18:16 – Updated: 2024-09-17 01:31

Title

Junos OS and Junos OS Evolved: Denial of Service vulnerability in local file processing

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CWE

CWE-269 - Improper Privilege Management
CWE-20 - Improper Input Validation
Denial of Service (DoS)

Assigner

juniper CNA under the mitre root

CNA scorecard B 84/100 over 193 records in the last 180 days details

References

1 reference

URL	Tags
https://kb.juniper.net/JSA11222	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 15.1 , < 15.1R7-S10 (custom) Affected: 17.4 , < 17.4R3-S5 (custom) Affected: 18.3 , < 18.3R3-S5 (custom) Affected: 18.4 , < 18.4R3-S9 (custom) Affected: 19.1 , < 19.1R3-S6 (custom) Affected: 19.2 , < 19.2R1-S7, 19.2R3-S3 (custom) Affected: 19.3 , < 19.3R2-S6, 19.3R3-S3 (custom) Affected: 19.4 , < 19.4R3-S6 (custom) Affected: 20.1 , < 20.1R2-S2, 20.1R3-S1 (custom) Affected: 20.2 , < 20.2R3-S2 (custom) Affected: 20.3 , < 20.3R3 (custom) Affected: 20.4 , < 20.4R2-S1, 20.4R3 (custom) Affected: 21.1 , < 21.1R1-S1, 21.1R2 (custom)
Juniper Networks	Junos OS Evolved	Affected: unspecified , < 20.4R2-S3-EVO (custom) Affected: 21.1R1-EVO , < 21.1* (custom)

Date Public

2021-10-13 00:00

Credits

Juniper SIRT would like to acknowledge and thank awxylitol for responsibly reporting this vulnerability.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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