Vulnerability-Lookup

ubuntu-cve-2019-11840

Vulnerability from osv_ubuntu

Published

2019-05-09 16:29

Modified

2026-08-20 19:08

Summary

Details

An issue was discovered in the supplementary Go cryptography library, golang.org/x/crypto, before v0.0.0-20190320223903-b7391e95e576. A flaw was found in the amd64 implementation of the golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa packages. If more than 256 GiB of keystream is generated, or if the counter otherwise grows greater than 32 bits, the amd64 implementation will first generate incorrect output, and then cycle back to previously generated keystream. Repeated keystream bytes can lead to loss of confidentiality in encryption applications, or to predictability in CSPRNG applications.

Severity

5.9 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2019-11840	REPORT
	https://go.googlesource.com/crypto/+/b7391e95e576…	REPORT
	https://groups.google.com/forum/#!msg/golang-anno…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2019-11840	REPORT

JSON

To clipboard

{
  "affected": [
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      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "golang-go.crypto-dev",
            "binary_version": "1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm3"
          },
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          }
        ]
      },
      "package": {
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        "name": "golang-go.crypto",
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      },
      "ranges": [
        {
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            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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        "1:0.0~git20151201.0.7b85b09-2ubuntu0.1~esm2",
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          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.71.1+ubuntu25.10.1",
        "2.72+ubuntu26.04.1",
        "2.73+ubuntu26.04.1",
        "2.74+ubuntu26.04",
        "2.74.1+ubuntu26.04",
        "2.74.1+ubuntu26.04.3",
        "2.74.1+ubuntu26.04.4",
        "2.75.2+ubuntu26.04.2",
        "2.76+ubuntu26.04.2",
        "2.76+ubuntu26.04.3",
        "2.76.3+ubuntu26.04"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in the supplementary Go cryptography library, golang.org/x/crypto, before v0.0.0-20190320223903-b7391e95e576. A flaw was found in the amd64 implementation of the golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa packages. If more than 256 GiB of keystream is generated, or if the counter otherwise grows greater than 32 bits, the amd64 implementation will first generate incorrect output, and then cycle back to previously generated keystream. Repeated keystream bytes can lead to loss of confidentiality in encryption applications, or to predictability in CSPRNG applications.",
  "id": "UBUNTU-CVE-2019-11840",
  "modified": "2026-08-20T19:08:30Z",
  "published": "2019-05-09T16:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2019-11840"
    },
    {
      "type": "REPORT",
      "url": "https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d"
    },
    {
      "type": "REPORT",
      "url": "https://groups.google.com/forum/#!msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2019-11840"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2019-11840"
  ]
}

CVE-2019-11840 (GCVE-0-2019-11840)

Vulnerability from cvelistv5 – Published: 2019-05-09 00:00 – Updated: 2024-08-04 23:03

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

11 references

URL	Tags
https://groups.google.com/forum/#%21msg/golang-an…
https://bugzilla.redhat.com/show_bug.cgi?id=1691529
https://go.googlesource.com/crypto/+/b7391e95e576…
https://github.com/golang/go/issues/30965
https://lists.debian.org/debian-lts-announce/2019…	mailing-list
https://lists.debian.org/debian-lts-announce/2020…	mailing-list
https://lists.debian.org/debian-lts-announce/2020…	mailing-list
https://lists.debian.org/debian-lts-announce/2020…	mailing-list
https://lists.debian.org/debian-lts-announce/2021…	mailing-list
https://lists.debian.org/debian-lts-announce/2023…	mailing-list
https://pkg.go.dev/vuln/GO-2022-0209

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.