Vulnerabilites related to Yubico - pam-u2f
Vulnerability from fkie_nvd
Published
2021-05-26 00:15
Modified
2024-11-21 06:06
Severity ?
Summary
Yubico pam-u2f before 1.1.1 has a logic issue that, depending on the pam-u2f configuration and the application used, could lead to a local PIN bypass. This issue does not allow user presence (touch) or cryptographic signature verification to be bypassed, so an attacker would still need to physically possess and interact with the YubiKey or another enrolled authenticator. If pam-u2f is configured to require PIN authentication, and the application using pam-u2f allows the user to submit NULL as the PIN, pam-u2f will attempt to perform a FIDO2 authentication without PIN. If this authentication is successful, the PIN requirement is bypassed.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| yubico | pam-u2f | * | |
| fedoraproject | fedora | 34 | |
| fedoraproject | fedora | 35 |
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},
{
"lang": "es",
"value": "Yubico pam-u2f antes de la versi\u00f3n 1.1.1 tiene un problema l\u00f3gico que, dependiendo de la configuraci\u00f3n de pam-u2f y de la aplicaci\u00f3n utilizada, podr\u00eda conducir a una derivaci\u00f3n local del PIN. Este problema no permite eludir la presencia del usuario (tacto) o la verificaci\u00f3n de la firma criptogr\u00e1fica, por lo que un atacante todav\u00eda tendr\u00eda que poseer f\u00edsicamente e interactuar con la YubiKey u otro autenticador inscrito. Si pam-u2f est\u00e1 configurado para requerir la autenticaci\u00f3n con PIN, y la aplicaci\u00f3n que utiliza pam-u2f permite al usuario enviar NULL como PIN, pam-u2f intentar\u00e1 realizar una autenticaci\u00f3n FIDO2 sin PIN. Si esta autenticaci\u00f3n tiene \u00e9xito, el requisito del PIN se omite"
}
],
"id": "CVE-2021-31924",
"lastModified": "2024-11-21T06:06:31.330",
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{
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"tags": [
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"url": "https://developers.yubico.com/pam-u2f/"
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},
{
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{
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{
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"tags": [
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],
"url": "https://www.yubico.com/support/security-advisories/ysa-2021-03"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Vulnerability from fkie_nvd
Published
2019-06-04 21:29
Modified
2024-11-21 04:22
Severity ?
Summary
Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.
References
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},
{
"lang": "es",
"value": "Yubico pam-u2f 1.0.7 intenta analizar el archivo de configuraci\u00f3n configurado (predeterminado $ HOME / .config / Yubico / u2f_keys) como root (a menos que se haya habilitado openasuser), y no verifica correctamente que la ruta carece de enlaces simb\u00f3licos que apuntan a otros archivos en el Sistema propiedad de root. Si la opci\u00f3n de depuraci\u00f3n est\u00e1 habilitada en la configuraci\u00f3n de PAM, se registrar\u00e1 parte del contenido del archivo de un objetivo de enlace simb\u00f3lico, posiblemente revelando informaci\u00f3n confidencial."
}
],
"id": "CVE-2019-12209",
"lastModified": "2024-11-21T04:22:25.500",
"metrics": {
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{
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"baseSeverity": "MEDIUM",
"cvssData": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
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"impactScore": 2.9,
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}
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]
},
"published": "2019-06-04T21:29:00.780",
"references": [
{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html"
},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html"
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"Exploit",
"Mailing List",
"Third Party Advisory"
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},
{
"source": "cve@mitre.org",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://developers.yubico.com/pam-u2f/Release_Notes.html"
},
{
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},
{
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},
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"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html"
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"tags": [
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"url": "https://developers.yubico.com/pam-u2f/Release_Notes.html"
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],
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"vulnStatus": "Modified",
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"source": "nvd@nist.gov",
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]
}
Vulnerability from fkie_nvd
Published
2019-06-04 21:29
Modified
2024-11-21 04:22
Severity ?
Summary
In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.
References
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},
{
"lang": "es",
"value": "En Yubico pam-u2f 1.0.7, cuando se configura con depuraci\u00f3n y se configura un archivo de registro de depuraci\u00f3n personalizado utilizando debug_file, ese descriptor de archivo no se cierra cuando un nuevo proceso es generado. Esto lleva a que el descriptor de archivo se herede en el proceso hijo; El proceso hijo puede leer y escribir en \u00e9l. Esto puede filtrar informaci\u00f3n confidencial y tambi\u00e9n, si se escribe, se puede utilizar para rellenar el disco o la informaci\u00f3n err\u00f3nea de la planta."
}
],
"id": "CVE-2019-12210",
"lastModified": "2024-11-21T04:22:25.653",
"metrics": {
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"acInsufInfo": false,
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"accessVector": "NETWORK",
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"published": "2019-06-04T21:29:00.827",
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},
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}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
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{
"lang": "en",
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]
}
CVE-2019-12210 (GCVE-0-2019-12210)
Vulnerability from cvelistv5
Published
2019-06-04 20:28
Modified
2024-08-04 23:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, be used to fill the disk or plant misinformation.
References
| ► | URL | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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CVE-2019-12209 (GCVE-0-2019-12209)
Vulnerability from cvelistv5
Published
2019-06-04 20:26
Modified
2024-08-04 23:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.
References
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CVE-2021-31924 (GCVE-0-2021-31924)
Vulnerability from cvelistv5
Published
2021-05-25 23:40
Modified
2024-08-03 23:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- n/a
Summary
Yubico pam-u2f before 1.1.1 has a logic issue that, depending on the pam-u2f configuration and the application used, could lead to a local PIN bypass. This issue does not allow user presence (touch) or cryptographic signature verification to be bypassed, so an attacker would still need to physically possess and interact with the YubiKey or another enrolled authenticator. If pam-u2f is configured to require PIN authentication, and the application using pam-u2f allows the user to submit NULL as the PIN, pam-u2f will attempt to perform a FIDO2 authentication without PIN. If this authentication is successful, the PIN requirement is bypassed.
References
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CVE-2025-23013 (GCVE-0-2025-23013)
Vulnerability from cvelistv5
Published
2025-01-15 00:00
Modified
2025-02-03 10:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-394 - Unexpected Status Code or Return Value
Summary
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.
References
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