Vulnerability-Lookup

GHSA-792V-3CGW-26XQ

Vulnerability from github – Published: 2023-09-27 15:30 – Updated: 2026-02-25 18:31

Details

With a specific request to

webauth_operation.php

that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of

integrity

for a certain part of the file system, which may allow chaining to other vulnerabilities.

This issue affects Juniper Networks Junos OS on SRX Series:

22.4 versions prior to 22,4R2-S2, 22.4R3;
23.2 versions prior to 23.2R2.

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2023-36851"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-09-27T15:18:54Z",
    "severity": "MODERATE"
  },
  "details": "A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.\n\n\n\nWith a specific request to \n\nwebauth_operation.php\n\nthat doesn\u0027t require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of \n\nintegrity\n\nfor a certain\u00a0part of the\u00a0file system, which may allow chaining to other vulnerabilities.\n\n\nThis issue affects Juniper Networks Junos OS on SRX Series:\n\n\n\n  *  22.4 versions prior to 22,4R2-S2, 22.4R3;\n  *  23.2 versions prior to 23.2R2.",
  "id": "GHSA-792v-3cgw-26xq",
  "modified": "2026-02-25T18:31:23Z",
  "published": "2023-09-27T15:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-36851"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA72300"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36851"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-36851 (GCVE-0-2023-36851)

Vulnerability from cvelistv5 – Published: 2023-09-26 19:53 – Updated: 2025-10-21 23:05

Title

Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files

Summary

A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to webauth_operation.php that doesn't require authentication, an attacker is able to upload and download arbitrary files via J-Web, leading to a loss of integrity or confidentiality, which may allow chaining to other vulnerabilities. This issue affects Juniper Networks Junos OS on SRX Series: * 21.2 versions prior to 21.2R3-S8; * 21.4 versions prior to 21.4R3-S6; * 22.1 versions prior to 22.1R3-S5; * 22.2 versions prior to 22.2R3-S3; * 22.3 versions prior to 22.3R3-S2; * 22.4 versions prior to 22,4R2-S2, 22.4R3; * 23.2 versions prior to 23.2R1-S2, 23.2R2.

Severity

5.3 (Medium)


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

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2023-11-15 16:40 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

juniper mitre root

References

2 references

URL	Tags
https://supportportal.juniper.net/JSA72300	vendor-advisorymitigation
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
Juniper Networks	Junos OS	Affected: 21.2 , < 21.2R3-S8 (semver) Affected: 21.4 , < 21.4R3-S6 (semver) Affected: 22.1 , < 22.1R3-S5 (semver) Affected: 22.2 , < 22.2R3-S3 (semver) Affected: 22.3 , < 22.3R3-S2 (semver) Affected: 22.4 , < 22.4R2-S2, 22.4R3 (semver) Affected: 23.2 , < 23.2R1-S2, 23.2R2 (semver)

Date Public

2023-09-05 19:00

Credits

The Juniper SIRT would like to acknowledge and thank watchtowr 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.

Detection rules are retrieved from Rulezet.

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.