Vulnerability-Lookup

GHSA-543W-Q592-87PH

Vulnerability from github – Published: 2022-05-13 01:18 – Updated: 2025-04-20 03:47

Details

The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

Severity

5.3 (Medium)


                  
                    CVSS:3.0/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-2017-15906"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-732"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-10-26T03:29:00Z",
    "severity": "MODERATE"
  },
  "details": "The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.",
  "id": "GHSA-543w-q592-87ph",
  "modified": "2025-04-20T03:47:36Z",
  "published": "2022-05-13T01:18:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15906"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2018:0980"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/201801-05"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20180423-0004"
    },
    {
      "type": "WEB",
      "url": "https://www.openssh.com/txt/release-7.6"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/101552"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2017-15906 (GCVE-0-2017-15906)

Vulnerability from cvelistv5 – Published: 2017-10-26 00:00 – Updated: 2026-05-28 17:56

Summary

The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

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: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-28 17:55 UTC

CWE

n/a
CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2324 records in the last 180 days details

References

9 references

URL	Tags
https://www.openssh.com/txt/release-7.6
http://www.securityfocus.com/bid/101552	vdb-entry
https://github.com/openbsd/src/commit/a6981567e8e…
https://security.gentoo.org/glsa/201801-05	vendor-advisory
https://security.netapp.com/advisory/ntap-2018042…
https://access.redhat.com/errata/RHSA-2018:0980	vendor-advisory
https://lists.debian.org/debian-lts-announce/2018…	mailing-list
https://www.oracle.com/security-alerts/cpujan2020.html
https://cert-portal.siemens.com/productcert/pdf/s…

Date Public

2017-10-25 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T20:04:50.496Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.openssh.com/txt/release-7.6"
          },
          {
            "name": "101552",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/101552"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19"
          },
          {
            "name": "GLSA-201801-05",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201801-05"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20180423-0004/"
          },
          {
            "name": "RHSA-2018:0980",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2018:0980"
          },
          {
            "name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2017-15906",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-28T17:55:30.344527Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-732",
                "description": "CWE-732 Incorrect Permission Assignment for Critical Resource",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-28T17:56:04.112Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2017-10-25T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-13T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.openssh.com/txt/release-7.6"
        },
        {
          "name": "101552",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securityfocus.com/bid/101552"
        },
        {
          "url": "https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19"
        },
        {
          "name": "GLSA-201801-05",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/201801-05"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20180423-0004/"
        },
        {
          "name": "RHSA-2018:0980",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2018:0980"
        },
        {
          "name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2017-15906",
    "datePublished": "2017-10-26T00:00:00.000Z",
    "dateReserved": "2017-10-25T00:00:00.000Z",
    "dateUpdated": "2026-05-28T17:56:04.112Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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.

Action not permitted