Vulnerability-Lookup

UBUNTU-CVE-2025-23013 (CVE-2025-23013)

Vulnerability from osv_ubuntu – Published: 2025-01-15 04:15 – Updated: 2025-10-24 05:18 – Source website

Details

In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable Authentication Module (PAM) that can be deployed to support authentication using a YubiKey or other FIDO compliant authenticators on macOS or Linux. This software package has an issue that allows for an authentication bypass in some configurations. An attacker would require the ability to access the system as an unprivileged user. Depending on the configuration, the attacker may also need to know the user's password.

Severity

7.3 (High)


                    
                      CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-23013	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-23013	REPORT
	https://www.yubico.com/support/security-advisorie…	REPORT
	https://www.openwall.com/lists/oss-security/2025/…	REPORT
	http://www.openwall.com/lists/oss-security/2025/01/15/1	REPORT
	https://ubuntu.com/security/notices/USN-7806-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.0.3-1"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.0.3-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.0.3-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.1-1",
        "1.0.2-1",
        "1.0.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.0.4-2"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.0.4-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.0.4-2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.4-2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.0.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.0.8-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.0.8-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.8-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.1.0-1.1+deb12u1build0.22.04.1"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.1.0-1.1+deb12u1build0.22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.1.0-1.1+deb12u1build0.22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0-1.1+deb12u1build0.22.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0-1.1",
        "1.1.0-1.1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.1.0-1.1+deb12u1build0.24.04.1"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.1.0-1.1+deb12u1build0.24.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.1.0-1.1+deb12u1build0.24.04.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0-1.1+deb12u1build0.24.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0-1.1build1",
        "1.1.0-1.1build2",
        "1.1.0-1.1build3"
      ]
    }
  ],
  "aliases": [],
  "details": "In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable Authentication Module (PAM) that can be deployed to support authentication using a YubiKey or other FIDO compliant authenticators on macOS or Linux. This software package has an issue that allows for an authentication bypass in some configurations. An attacker would require the ability to access the system as an unprivileged user. Depending on the configuration, the attacker may also need to know the user\u0027s password.",
  "id": "UBUNTU-CVE-2025-23013",
  "modified": "2025-10-24T05:18:01Z",
  "published": "2025-01-15T04:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-23013"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-23013"
    },
    {
      "type": "REPORT",
      "url": "https://www.yubico.com/support/security-advisories/ysa-2025-01/"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2025/01/15/1"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2025/01/15/1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7806-1"
    }
  ],
  "related": [
    "USN-7806-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-23013"
  ]
}

CVE-2025-23013 (GCVE-0-2025-23013)

Vulnerability from cvelistv5 – Published: 2025-01-15 00:00 – Updated: 2025-02-03 10:03

Summary

Severity

7.3 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-15 14:51 UTC

CWE

CWE-394 - Unexpected Status Code or Return Value

Assigner

mitre mitre root

References

7 references

URL	Tags
https://www.yubico.com/support/security-advisorie…
http://www.openwall.com/lists/oss-security/2025/01/15/1
http://www.openwall.com/lists/oss-security/2025/01/16/2
http://www.openwall.com/lists/oss-security/2025/01/16/3
http://www.openwall.com/lists/oss-security/2025/01/16/4
http://www.openwall.com/lists/oss-security/2025/01/16/5
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

1 product

Vendor	Product	Version
Yubico	pam-u2f	Affected: 0 , < 1.3.1 (semver) cpe:2.3:a:yubico:pam-u2f::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-02-03T10:03:09.695Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/01/15/1"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/01/16/2"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/01/16/3"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/01/16/4"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/01/16/5"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/02/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-23013",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-15T14:51:01.272240Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-01-15T14:51:14.757Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "pam-u2f",
          "vendor": "Yubico",
          "versions": [
            {
              "lessThan": "1.3.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:yubico:pam-u2f:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "1.3.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable Authentication Module (PAM) that can be deployed to support authentication using a YubiKey or other FIDO compliant authenticators on macOS or Linux. This software package has an issue that allows for an authentication bypass in some configurations. An attacker would require the ability to access the system as an unprivileged user. Depending on the configuration, the attacker may also need to know the user\u0027s password."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-394",
              "description": "CWE-394 Unexpected Status Code or Return Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-15T03:56:38.534Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://www.yubico.com/support/security-advisories/ysa-2025-01/"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-23013",
    "datePublished": "2025-01-15T00:00:00.000Z",
    "dateReserved": "2025-01-09T00:00:00.000Z",
    "dateUpdated": "2025-02-03T10:03:09.695Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

USN-7806-1 (UBUNTU-CVE-2025-23013)

Vulnerability from osv_ubuntu – Published: 2025-10-06 16:35 – Updated: 2026-02-10 04:50 – Source website

Summary

pam-u2f vulnerability

Details

It was discovered that PAM/U2F could allow for authentication bypass in some configurations. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service.

References

URL

Type

	https://ubuntu.com/security/notices/USN-7806-1	ADVISORY
	https://ubuntu.com/security/CVE-2025-23013	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-23013",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.0.8-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.0.8-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.0.8-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.8-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.8-1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-23013",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.1.0-1.1+deb12u1build0.22.04.1"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.1.0-1.1+deb12u1build0.22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.1.0-1.1+deb12u1build0.22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0-1.1+deb12u1build0.22.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0-1.1",
        "1.1.0-1.1build1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-23013",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libpam-u2f",
            "binary_version": "1.1.0-1.1+deb12u1build0.24.04.1"
          },
          {
            "binary_name": "pamu2fcfg",
            "binary_version": "1.1.0-1.1+deb12u1build0.24.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pam-u2f",
        "purl": "pkg:deb/ubuntu/pam-u2f@1.1.0-1.1+deb12u1build0.24.04.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.0-1.1+deb12u1build0.24.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.0-1.1build1",
        "1.1.0-1.1build2",
        "1.1.0-1.1build3"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that PAM/U2F could allow for authentication bypass in\nsome configurations. An attacker could possibly use this issue to execute\narbitrary code or cause a denial of service.",
  "id": "USN-7806-1",
  "modified": "2026-02-10T04:50:11Z",
  "published": "2025-10-06T16:35:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7806-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-23013"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "pam-u2f vulnerability",
  "upstream": [
    "UBUNTU-CVE-2025-23013"
  ]
}

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.

Action not permitted

UBUNTU-CVE-2025-23013 (CVE-2025-23013)

CVE-2025-23013 (GCVE-0-2025-23013)

USN-7806-1 (UBUNTU-CVE-2025-23013)

Tags

Sightings

Nomenclature

Related by attack behaviour