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Security advisory

Type: advisorySources: OSVCVE: CVE-2017-7407

The ourWriteOut function in tool_writeout.c in curl 7.53.1 might allow physically proximate attackers to obtain sensitive information from process memory in opportunistic circumstances by reading a workstation screen during use of a --write-out argument ending in a '%' character, which leads to a heap-based buffer over-read.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2017-7407
Confirmed fixed CVEs
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Updated in this feed
31 Oct 2026, 12:26 UTC · Revision 1

Source evidence

CVE-2017-7407

core-osv · Original source

Published 3 Apr 2017, 20:59 UTC

The ourWriteOut function in tool_writeout.c in curl 7.53.1 might allow physically proximate attackers to obtain sensitive information from process memory in opportunistic circumstances by reading a workstation screen during use of a --write-out argument ending in a '%' character, which leads to a heap-based buffer over-read.

osv:CVE-2017-7407
Complete source record
{
  "id": "975693b786879cfd42e1dafa67ffe7da60943781632d54aa8c0a2a1f2109d676",
  "url": "https://osv.dev/vulnerability/CVE-2017-7407",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-7407",
    "summary": "The ourWriteOut function in tool_writeout.c in curl 7.53.1 might allow physically proximate attackers to obtain sensitive information from process memory in opportunistic circumstances by reading a workstation screen during use of a --write-out argument ending in a '%' character, which leads to a heap-based buffer over-read.",
    "evidence": "osv:CVE-2017-7407",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2017-7407",
      "aliases": [
        "CURL-CVE-2017-7407",
        "CVE-2017-7407"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/curl/curl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "25df50aa3392ecdbf2b8256b93b30558e8b3a810"
                },
                {
                  "last_affected": "25df50aa3392ecdbf2b8256b93b30558e8b3a810"
                },
                {
                  "fixed": "1890d59905414ab84a35892b2e45833654aa5c13"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:haxx:curl:7.53.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.53.1"
                      },
                      {
                        "last_affected": "7.53.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1890d59905414ab84a35892b2e45833654aa5c13"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "7.53.1",
            "curl-7_53_1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-7407.json",
            "vanir_signatures": [
              {
                "id": "CVE-2017-7407-503b5770",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "119066316151948807005295019564101395011",
                    "137737830742583149452429535963228918912",
                    "51529351887636434842909831520961132979",
                    "180982491866925066316252044149786616047"
                  ]
                },
                "source": "https://github.com/curl/curl/commit/1890d59905414ab84a35892b2e45833654aa5c13",
                "target": {
                  "file": "src/tool_writeout.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2017-7407-defd70e3",
                "digest": {
                  "length": 5508,
                  "function_hash": "122384078902818575986643295615648528317"
                },
                "source": "https://github.com/curl/curl/commit/1890d59905414ab84a35892b2e45833654aa5c13",
                "target": {
                  "file": "src/tool_writeout.c",
                  "function": "ourWriteOut"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:32:32Z"
          }
        }
      ],
      "modified": "2026-10-20T13:32:32.432783419Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/errata/RHSA-2018:3558",
        "https://security.gentoo.org/glsa/201709-14",
        "https://github.com/curl/curl/commit/1890d59905414ab84a35892b2e45833654aa5c13"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-7407",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387796,
  "published_at": "2017-04-03T20:59:00.247+00:00"
}