curl — security advisory

{
  "id": "3111bba30f125b77f6726762c2f2b07e8cff0650f52961d98efff4797eef87de",
  "url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-1000005",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALPINE-CVE-2018-1000005",
    "summary": "libcurl 7.49.0 to and including 7.57.0 contains an out bounds read in code handling HTTP/2 trailers. It was reported (https://github.com/curl/curl/pull/2231) that reading an HTTP/2 trailer could mess up future trailers since the stored size was one byte less than required. The problem is that the code that creates HTTP/1-like headers from the HTTP/2 trailer data once appended a string like `:` to the target buffer, while this was recently changed to `: ` (a space was added after the colon) but the following math wasn't updated correspondingly. When accessed, the data is read out of bounds and causes either a crash or that the (too large) data gets passed to client write. This could lead to a denial-of-service situation or an information disclosure if someone has a service that echoes back or uses the trailers for something.",
    "evidence": "osv:ALPINE-CVE-2018-1000005",
    "products": [
      {
        "name": {
          "value": "curl",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.58.0-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "curl",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.58.0-r0",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "curl",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.58.0-r0",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "curl",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.58.0-r0",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "ALPINE-CVE-2018-1000005",
      "aliases": [
        "ALPINE-CVE-2018-1000005"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.58.0-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "curl",
            "purl": "pkg:apk/alpine/curl?arch=source",
            "ecosystem": "Alpine:v3.4"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-1000005.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.58.0-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "curl",
            "purl": "pkg:apk/alpine/curl?arch=source",
            "ecosystem": "Alpine:v3.5"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-1000005.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.58.0-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "curl",
            "purl": "pkg:apk/alpine/curl?arch=source",
            "ecosystem": "Alpine:v3.6"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-1000005.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7.58.0-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "curl",
            "purl": "pkg:apk/alpine/curl?arch=source",
            "ecosystem": "Alpine:v3.7"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2018-1000005.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-23T17:23:28.122535644Z",
      "provider": "osv",
      "upstream": [
        "CVE-2018-1000005"
      ],
      "references": [
        "https://security.alpinelinux.org/vuln/CVE-2018-1000005"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2018-1000005",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 415665,
  "published_at": "2018-01-24T22:29:00.307+00:00"
}