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

CVE-2019-6110 (GCVE-0-2019-6110)

Vulnerability from cvelistv5 – Published: 2019-01-31 00:00 – Updated: 2025-12-18 14:32
VLAI
Summary
In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:32 UTC
CWE
  • n/a
  • CWE-838 - Inappropriate Encoding for Output Context
Assigner
References
Date Public
2019-01-31 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T20:16:24.236Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20190213-0001/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt"
          },
          {
            "name": "46193",
            "tags": [
              "exploit",
              "x_transferred"
            ],
            "url": "https://www.exploit-db.com/exploits/46193/"
          },
          {
            "name": "GLSA-201903-16",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201903-16"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.8,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2019-6110",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-18T14:32:36.663566Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-838",
                "description": "CWE-838 Inappropriate Encoding for Output Context",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-18T14:32:50.185Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2019-01-31T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-13T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://security.netapp.com/advisory/ntap-20190213-0001/"
        },
        {
          "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c"
        },
        {
          "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c"
        },
        {
          "url": "https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt"
        },
        {
          "name": "46193",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/46193/"
        },
        {
          "name": "GLSA-201903-16",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/201903-16"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-6110",
    "datePublished": "2019-01-31T00:00:00.000Z",
    "dateReserved": "2019-01-10T00:00:00.000Z",
    "dateUpdated": "2025-12-18T14:32:50.185Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2019-6110",
      "date": "2026-09-20",
      "epss": "0.20906",
      "percentile": "0.97448"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "52D09A55-B853-43B5-8397-E2AC6CD0EBBC",
                    "versionEndIncluding": "7.9",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3D0A98E2-B715-4EF5-9CF8-07500E119271",
                    "versionEndIncluding": "5.13",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "85DF4B3F-4BBC-42B7-B729-096934523D63",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:ontap_select_deploy:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7E968916-8CE0-4165-851F-14E37ECEA948",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7B7A6697-98CC-4E36-93DB-B7160F8399F9",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0D3A0312-1249-4257-98F1-57E8959989C5",
                    "versionEndExcluding": "3.2.7",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:siemens:scalance_x204rna:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EA8B483F-0FD2-49F8-A86A-672A6E007949",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:siemens:scalance_x204rna_eec_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FC0C9671-47BB-43CB-8906-9BC2B86B3229",
                    "versionEndExcluding": "3.2.7",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:siemens:scalance_x204rna_eec:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C834C295-D600-44E8-9783-49A319084F5A",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred."
          },
          {
            "lang": "es",
            "value": "En OpenSSH 7.9, debido a la aceptaci\u00f3n y la nuestra de salidas stderr arbitrarias del servidor, un servidor malicioso (o atacante Man-in-the-Middle) puede manipular la salida del cliente, por ejemplo, para emplear c\u00f3digos de control de ANSI para ocultar los archivos adicionales que se est\u00e1n transfiriendo."
          }
        ],
        "id": "CVE-2019-6110",
        "lastModified": "2025-12-18T15:15:47.940",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "HIGH",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4.0,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 4.9,
              "impactScore": 4.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.8,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.6,
              "impactScore": 5.2,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.8,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.6,
              "impactScore": 5.2,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ]
        },
        "published": "2019-01-31T18:29:00.807",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Release Notes"
            ],
            "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Release Notes"
            ],
            "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/201903-16"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20190213-0001/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/46193/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes"
            ],
            "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes"
            ],
            "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/201903-16"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20190213-0001/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/46193/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-838"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-838"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-26T23:15:16+00:00",
      "cve": "CVE-2019-6110",
      "id": "CVE-2019-6110",
      "initial_release_date": "2019-01-01T00:00:00+00:00",
      "product_status:known_affected": "27",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssh: Acceptance and display of arbitrary stderr allows for spoofing of scp client output",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-6110.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-04T20:16:24.236Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://security.netapp.com/advisory/ntap-20190213-0001/"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt"
              },
              {
                "name": "46193",
                "tags": [
                  "exploit",
                  "x_transferred"
                ],
                "url": "https://www.exploit-db.com/exploits/46193/"
              },
              {
                "name": "GLSA-201903-16",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://security.gentoo.org/glsa/201903-16"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "HIGH",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "NONE",
                  "baseScore": 6.8,
                  "baseSeverity": "MEDIUM",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "REQUIRED",
                  "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2019-6110",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-12-18T14:32:36.663566Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-838",
                    "description": "CWE-838 Inappropriate Encoding for Output Context",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-12-18T14:32:03.193Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "n/a",
              "vendor": "n/a",
              "versions": [
                {
                  "status": "affected",
                  "version": "n/a"
                }
              ]
            }
          ],
          "datePublic": "2019-01-31T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "n/a",
                  "lang": "en",
                  "type": "text"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2022-12-13T00:00:00.000Z",
            "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
            "shortName": "mitre"
          },
          "references": [
            {
              "url": "https://security.netapp.com/advisory/ntap-20190213-0001/"
            },
            {
              "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c"
            },
            {
              "url": "https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c"
            },
            {
              "url": "https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt"
            },
            {
              "name": "46193",
              "tags": [
                "exploit"
              ],
              "url": "https://www.exploit-db.com/exploits/46193/"
            },
            {
              "name": "GLSA-201903-16",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://security.gentoo.org/glsa/201903-16"
            },
            {
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2019-6110",
        "datePublished": "2019-01-31T00:00:00.000Z",
        "dateReserved": "2019-01-10T00:00:00.000Z",
        "dateUpdated": "2025-12-18T14:32:50.185Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.