GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

USN-6259-1 (UBUNTU-CVE-2020-13987)

Vulnerability from osv_ubuntu – Published: 2023-07-27 11:00 – Updated: 2026-06-25 10:46 – Source website
VLAI
Summary
open-iscsi vulnerabilities
Details

Jos Wetzels, Stanislav Dashevskyi, and Amine Amri discovered that Open-iSCSI incorrectly handled certain checksums for IP packets. An attacker could possibly use this issue to expose sensitive information. (CVE-2020-13987)

Jos Wetzels, Stanislav Dashevskyi, Amine Amri discovered that Open-iSCSI incorrectly handled certain parsing TCP MSS options. An attacker could possibly use this issue to cause a crash or cause unexpected behavior. (CVE-2020-13988)

Amine Amri and Stanislav Dashevskyi discovered that Open-iSCSI incorrectly handled certain TCP data. An attacker could possibly use this issue to expose sensitive information. (CVE-2020-17437)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-13987",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-13988",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-17437",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "open-iscsi",
            "binary_version": "2.0.873+git0.3b4b4500-14ubuntu3.7+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "open-iscsi",
        "purl": "pkg:deb/ubuntu/open-iscsi@2.0.873+git0.3b4b4500-14ubuntu3.7+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.873+git0.3b4b4500-14ubuntu3.7+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.873-3ubuntu13",
        "2.0.873+git0.3b4b4500-13ubuntu3",
        "2.0.873+git0.3b4b4500-14ubuntu1",
        "2.0.873+git0.3b4b4500-14ubuntu3",
        "2.0.873+git0.3b4b4500-14ubuntu3.1",
        "2.0.873+git0.3b4b4500-14ubuntu3.2",
        "2.0.873+git0.3b4b4500-14ubuntu3.3",
        "2.0.873+git0.3b4b4500-14ubuntu3.4",
        "2.0.873+git0.3b4b4500-14ubuntu3.5",
        "2.0.873+git0.3b4b4500-14ubuntu3.6",
        "2.0.873+git0.3b4b4500-14ubuntu3.7"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-13987",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-13988",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-17437",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "iscsiuio",
            "binary_version": "2.0.874-5ubuntu2.11+esm1"
          },
          {
            "binary_name": "open-iscsi",
            "binary_version": "2.0.874-5ubuntu2.11+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "open-iscsi",
        "purl": "pkg:deb/ubuntu/open-iscsi@2.0.874-5ubuntu2.11+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.874-5ubuntu2.11+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.874-4ubuntu3",
        "2.0.874-4ubuntu4",
        "2.0.874-4ubuntu5",
        "2.0.874-5ubuntu1",
        "2.0.874-5ubuntu2",
        "2.0.874-5ubuntu2.1",
        "2.0.874-5ubuntu2.2",
        "2.0.874-5ubuntu2.3",
        "2.0.874-5ubuntu2.4",
        "2.0.874-5ubuntu2.6",
        "2.0.874-5ubuntu2.7",
        "2.0.874-5ubuntu2.9",
        "2.0.874-5ubuntu2.10",
        "2.0.874-5ubuntu2.11"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-13987",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-13988",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2020-17437",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "iscsiuio",
            "binary_version": "2.0.874-7.1ubuntu6.4"
          },
          {
            "binary_name": "open-iscsi",
            "binary_version": "2.0.874-7.1ubuntu6.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "open-iscsi",
        "purl": "pkg:deb/ubuntu/open-iscsi@2.0.874-7.1ubuntu6.4?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.874-7.1ubuntu6.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.874-7.1ubuntu3",
        "2.0.874-7.1ubuntu5",
        "2.0.874-7.1ubuntu6",
        "2.0.874-7.1ubuntu6.1",
        "2.0.874-7.1ubuntu6.2",
        "2.0.874-7.1ubuntu6.3"
      ]
    }
  ],
  "aliases": [],
  "details": "Jos Wetzels, Stanislav Dashevskyi, and Amine Amri discovered that\nOpen-iSCSI incorrectly handled certain checksums for IP packets.\nAn attacker could possibly use this issue to expose sensitive information.\n(CVE-2020-13987)\n\nJos Wetzels, Stanislav Dashevskyi, Amine Amri discovered that\nOpen-iSCSI incorrectly handled certain parsing TCP MSS options.\nAn attacker could possibly use this issue to cause a crash or cause\nunexpected behavior. (CVE-2020-13988)\n\nAmine Amri and Stanislav Dashevskyi discovered that Open-iSCSI\nincorrectly handled certain TCP data. An attacker could possibly\nuse this issue to expose sensitive information. (CVE-2020-17437)\n",
  "id": "USN-6259-1",
  "modified": "2026-06-25T10:46:15Z",
  "published": "2023-07-27T11:00:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6259-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-13987"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-13988"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-17437"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "open-iscsi vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2020-13987",
    "UBUNTU-CVE-2020-13988",
    "UBUNTU-CVE-2020-17437"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.