Vulnerability-Lookup

UBUNTU-CVE-2020-19909 (CVE-2020-19909)

Vulnerability from osv_ubuntu – Published: 2023-08-22 19:16 – Updated: 2025-07-16 04:55 – Source website

Withdrawn 2025-07-18

Details

** DISPUTED ** Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error.

Severity

3.3 (Low)


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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2020-19909	REPORT
	https://github.com/curl/curl/pull/4166	REPORT
	https://daniel.haxx.se/blog/2023/08/26/cve-2020-1…	REPORT
	https://daniel.haxx.se/blog/2023/09/05/bogus-cve-…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2020-19909	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "curl-dbgsym",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl3-gnutls",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl3-gnutls-dbgsym",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl3-nss",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl3-nss-dbgsym",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl4",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl4-dbgsym",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl4-doc",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl4-gnutls-dev",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl4-nss-dev",
            "binary_version": "7.68.0-1ubuntu2.19"
          },
          {
            "binary_name": "libcurl4-openssl-dev",
            "binary_version": "7.68.0-1ubuntu2.19"
          }
        ],
        "priority_reason": "Crash in command-line tool only"
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@7.68.0-1ubuntu2.19?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.68.0-1ubuntu2.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.65.3-1ubuntu3",
        "7.65.3-1ubuntu4",
        "7.66.0-1ubuntu1",
        "7.67.0-2ubuntu1",
        "7.68.0-1ubuntu1",
        "7.68.0-1ubuntu2",
        "7.68.0-1ubuntu2.1",
        "7.68.0-1ubuntu2.2",
        "7.68.0-1ubuntu2.4",
        "7.68.0-1ubuntu2.5",
        "7.68.0-1ubuntu2.6",
        "7.68.0-1ubuntu2.7",
        "7.68.0-1ubuntu2.10",
        "7.68.0-1ubuntu2.11",
        "7.68.0-1ubuntu2.12",
        "7.68.0-1ubuntu2.13",
        "7.68.0-1ubuntu2.14",
        "7.68.0-1ubuntu2.15",
        "7.68.0-1ubuntu2.16",
        "7.68.0-1ubuntu2.18"
      ]
    }
  ],
  "aliases": [],
  "details": "** DISPUTED ** Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error.",
  "id": "UBUNTU-CVE-2020-19909",
  "modified": "2025-07-16T04:55:59Z",
  "published": "2023-08-22T19:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-19909"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/curl/curl/pull/4166"
    },
    {
      "type": "REPORT",
      "url": "https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves/"
    },
    {
      "type": "REPORT",
      "url": "https://daniel.haxx.se/blog/2023/09/05/bogus-cve-follow-ups/"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-19909"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-19909"
  ],
  "withdrawn": "2025-07-18T16:45:59Z"
}

CVE-2020-19909 (GCVE-0-2020-19909)

Vulnerability from cvelistv5 – Published: 2023-08-22 00:00 – Updated: 2026-07-26 00:30 Disputed

Summary

Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-08 18:11 UTC

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://github.com/curl/curl/pull/4166
https://daniel.haxx.se/blog/2023/08/26/cve-2020-1…
http://www.openwall.com/lists/oss-security/2026/07/23/2
http://www.openwall.com/lists/oss-security/2026/07/25/5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-19909",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-08T18:11:17.723863Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
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          "dateUpdated": "2024-07-08T18:11:30.698Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
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        "providerMetadata": {
          "dateUpdated": "2026-07-26T00:30:51.878Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            ],
            "url": "https://github.com/curl/curl/pull/4166"
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            "url": "https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves/"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/07/23/2"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/07/25/5"
          }
        ],
        "title": "CVE Program Container"
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    "cna": {
      "affected": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
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              "version": "n/a"
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          ]
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      "descriptions": [
        {
          "lang": "en",
          "value": "Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error."
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      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2023-08-28T08:04:05.477Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
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      "references": [
        {
          "url": "https://github.com/curl/curl/pull/4166"
        },
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          "url": "https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves/"
        }
      ],
      "tags": [
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-19909",
    "datePublished": "2023-08-22T00:00:00.000Z",
    "dateReserved": "2020-08-13T00:00:00.000Z",
    "dateUpdated": "2026-07-26T00:30:51.878Z",
    "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.

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.

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Action not permitted

UBUNTU-CVE-2020-19909 (CVE-2020-19909)

CVE-2020-19909 (GCVE-0-2020-19909)

Tags

Sightings

Nomenclature

Related by attack behaviour