Vulnerability-Lookup

ubuntu-cve-2015-6563

Vulnerability from osv_ubuntu

Published

2015-08-24 01:59

Modified

2026-05-29 17:44

Summary

Details

The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.

Severity

6.4 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2015-6563	REPORT
	https://anongit.mindrot.org/openssh.git/commit/?i…	REPORT
	http://www.openwall.com/lists/oss-security/2015/08/11/9	REPORT
	https://github.com/openssh/openssh-portable/commi…	REPORT
	http://www.openwall.com/lists/oss-security/2015/08/22/1	REPORT
	http://www.openssh.com/txt/release-7.0	REPORT
	http://seclists.org/fulldisclosure/2015/Aug/54	REPORT
	https://ubuntu.com/security/notices/USN-2710-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2015-6563	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openssh-client",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "openssh-server",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "openssh-sftp-server",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "ssh",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "ssh-askpass-gnome",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "ssh-krb5",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "openssh",
        "purl": "pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:6.6p1-2ubuntu2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:6.2p2-6",
        "1:6.2p2-6ubuntu1",
        "1:6.4p1-1",
        "1:6.4p1-2",
        "1:6.5p1-1",
        "1:6.5p1-2",
        "1:6.5p1-3",
        "1:6.5p1-4",
        "1:6.5p1-6",
        "1:6.6p1-1",
        "1:6.6p1-2",
        "1:6.6p1-2ubuntu1",
        "1:6.6p1-2ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c.",
  "id": "UBUNTU-CVE-2015-6563",
  "modified": "2026-05-29T17:44:44Z",
  "published": "2015-08-24T01:59:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-6563"
    },
    {
      "type": "REPORT",
      "url": "https://anongit.mindrot.org/openssh.git/commit/?id=d4697fe9a28dab7255c60433e4dd23cf7fce8a8b"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2015/08/11/9"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2015/08/22/1"
    },
    {
      "type": "REPORT",
      "url": "http://www.openssh.com/txt/release-7.0"
    },
    {
      "type": "REPORT",
      "url": "http://seclists.org/fulldisclosure/2015/Aug/54"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2710-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2015-6563"
    }
  ],
  "related": [
    "USN-2710-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2015-6563"
  ]
}

CVE-2015-6563 (GCVE-0-2015-6563)

Vulnerability from cvelistv5 – Published: 2015-08-24 00:00 – Updated: 2026-05-27 16:11

Summary

Severity

6.4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

n/a
CWE-20 - Improper Input Validation

Assigner

mitre

References

18 references

URL	Tags
http://www.openwall.com/lists/oss-security/2015/08/22/1	mailing-list
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisory
http://lists.apple.com/archives/security-announce…	vendor-advisory
https://support.apple.com/HT205375
http://www.securityfocus.com/bid/76317	vdb-entry
https://github.com/openssh/openssh-portable/commi…
http://www.oracle.com/technetwork/topics/security…
https://security.gentoo.org/glsa/201512-04	vendor-advisory
http://www.openssh.com/txt/release-7.0
http://www.oracle.com/technetwork/topics/security…
http://rhn.redhat.com/errata/RHSA-2016-0741.html	vendor-advisory
http://seclists.org/fulldisclosure/2015/Aug/54	mailing-list
http://www.oracle.com/technetwork/topics/security…
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisory
https://lists.debian.org/debian-lts-announce/2018…	mailing-list
https://security.netapp.com/advisory/ntap-2018020…
https://www.broadcom.com/support/fibre-channel-ne…
https://cert-portal.siemens.com/productcert/pdf/s…

Date Public

2015-08-01 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-06T07:22:22.366Z",
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            "tags": [
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            "tags": [
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            ],
            "url": "http://www.securityfocus.com/bid/76317"
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            "url": "https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b"
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            "tags": [
              "x_transferred"
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            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
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            "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
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            "url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"
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            "tags": [
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            "url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html"
          },
          {
            "name": "SUSE-SU-2015:1581",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html"
          },
          {
            "name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update",
            "tags": [
              "mailing-list",
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            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
          },
          {
            "tags": [
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            ],
            "url": "https://security.netapp.com/advisory/ntap-20180201-0002/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766"
          },
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            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.4,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2015-6563",
                "options": [
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                  },
                  {
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                  }
                ],
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                "timestamp": "2026-05-27T16:11:48.443803Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
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                "description": "CWE-20 Improper Input Validation",
                "lang": "en",
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              }
            ]
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-27T16:11:52.468Z",
          "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": "2015-08-01T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The monitor component in sshd in OpenSSH before 7.0 on non-OpenBSD platforms accepts extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which allows local users to conduct impersonation attacks by leveraging any SSH login access in conjunction with control of the sshd uid to send a crafted MONITOR_REQ_PWNAM request, related to monitor.c and monitor_wrap.c."
        }
      ],
      "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": [
        {
          "name": "[oss-security] 20150821 Re: CVE request - OpenSSH 6.9 PAM privilege separation vulnerabilities",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2015/08/22/1"
        },
        {
          "name": "FEDORA-2015-13469",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165170.html"
        },
        {
          "name": "APPLE-SA-2015-10-21-4",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.apple.com/archives/security-announce/2015/Oct/msg00005.html"
        },
        {
          "url": "https://support.apple.com/HT205375"
        },
        {
          "name": "76317",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securityfocus.com/bid/76317"
        },
        {
          "url": "https://github.com/openssh/openssh-portable/commit/d4697fe9a28dab7255c60433e4dd23cf7fce8a8b"
        },
        {
          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
        },
        {
          "name": "GLSA-201512-04",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/201512-04"
        },
        {
          "url": "http://www.openssh.com/txt/release-7.0"
        },
        {
          "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
        },
        {
          "name": "RHSA-2016:0741",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://rhn.redhat.com/errata/RHSA-2016-0741.html"
        },
        {
          "name": "20150813 BFS-SA-2015-002: OpenSSH PAM Privilege Separation Vulnerabilities",
          "tags": [
            "mailing-list"
          ],
          "url": "http://seclists.org/fulldisclosure/2015/Aug/54"
        },
        {
          "url": "http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html"
        },
        {
          "name": "SUSE-SU-2015:1581",
          "tags": [
            "vendor-advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html"
        },
        {
          "name": "[debian-lts-announce] 20180910 [SECURITY] [DLA 1500-1] openssh security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20180201-0002/"
        },
        {
          "url": "https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-766"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        }
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2015-6563",
    "datePublished": "2015-08-24T00:00:00.000Z",
    "dateReserved": "2015-08-21T00:00:00.000Z",
    "dateUpdated": "2026-05-27T16:11:52.468Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

usn-2710-1

Vulnerability from osv_ubuntu

Published

2015-08-14 15:26

Modified

2026-05-29 17:43

Summary

openssh vulnerabilities

Details

Moritz Jodeit discovered that OpenSSH incorrectly handled usernames when using PAM authentication. If an additional vulnerability were discovered in the OpenSSH unprivileged child process, this issue could allow a remote attacker to perform user impersonation. (CVE number pending)

Moritz Jodeit discovered that OpenSSH incorrectly handled context memory when using PAM authentication. If an additional vulnerability were discovered in the OpenSSH unprivileged child process, this issue could allow a remote attacker to bypass authentication or possibly execute arbitrary code. (CVE number pending)

Jann Horn discovered that OpenSSH incorrectly handled time windows for X connections. A remote attacker could use this issue to bypass certain access restrictions. (CVE-2015-5352)

It was discovered that OpenSSH incorrectly handled keyboard-interactive authentication. In a non-default configuration, a remote attacker could possibly use this issue to perform a brute-force password attack. (CVE-2015-5600)

References

URL

Type

	https://ubuntu.com/security/notices/USN-2710-1	ADVISORY
	https://ubuntu.com/security/CVE-2015-5352	REPORT
	https://ubuntu.com/security/CVE-2015-5600	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2015-5352",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2015-5600",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openssh-client",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "openssh-server",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "openssh-sftp-server",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "ssh",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "ssh-askpass-gnome",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          },
          {
            "binary_name": "ssh-krb5",
            "binary_version": "1:6.6p1-2ubuntu2.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "openssh",
        "purl": "pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.2?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:6.6p1-2ubuntu2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:6.2p2-6",
        "1:6.2p2-6ubuntu1",
        "1:6.4p1-1",
        "1:6.4p1-2",
        "1:6.5p1-1",
        "1:6.5p1-2",
        "1:6.5p1-3",
        "1:6.5p1-4",
        "1:6.5p1-6",
        "1:6.6p1-1",
        "1:6.6p1-2",
        "1:6.6p1-2ubuntu1",
        "1:6.6p1-2ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "Moritz Jodeit discovered that OpenSSH incorrectly handled usernames when\nusing PAM authentication. If an additional vulnerability were discovered in\nthe OpenSSH unprivileged child process, this issue could allow a remote\nattacker to perform user impersonation. (CVE number pending)\n\nMoritz Jodeit discovered that OpenSSH incorrectly handled context memory\nwhen using PAM authentication. If an additional vulnerability were\ndiscovered in the OpenSSH unprivileged child process, this issue could\nallow a remote attacker to bypass authentication or possibly execute\narbitrary code. (CVE number pending)\n\nJann Horn discovered that OpenSSH incorrectly handled time windows for\nX connections. A remote attacker could use this issue to bypass certain\naccess restrictions. (CVE-2015-5352)\n\nIt was discovered that OpenSSH incorrectly handled keyboard-interactive\nauthentication. In a non-default configuration, a remote attacker could\npossibly use this issue to perform a brute-force password attack.\n(CVE-2015-5600)\n",
  "id": "USN-2710-1",
  "modified": "2026-05-29T17:43:57Z",
  "published": "2015-08-14T15:26:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2710-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-5352"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-5600"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openssh vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2015-5352",
    "UBUNTU-CVE-2015-5600"
  ]
}

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.

Action not permitted

ubuntu-cve-2015-6563

Vulnerability from osv_ubuntu

CVE-2015-6563 (GCVE-0-2015-6563)

usn-2710-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature