CVE-2025-23013
published 2025-01-15CVE-2025-23013: 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…
PriorityP343high7.3CVSS 4.0
AVLACLATPPRLUINVCHVIHVAHSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
EPSS
0.40%
32.0th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | pam-u2f | < pam-u2f 1.1.0-1.1+deb12u1 (bookworm) | pam-u2f 1.1.0-1.1+deb12u1 (bookworm) |
| yubico | pam-u2f | < 1.3.1 | 1.3.1 |
| yubico | pam-u2f | >= 0 < 1.1.0-1.1+deb11u1 | 1.1.0-1.1+deb11u1 |
| yubico | pam-u2f | >= 0 < 1.1.0-1.1+deb12u1 | 1.1.0-1.1+deb12u1 |
| yubico | pam-u2f | >= 0 < 1.3.1-1 | 1.3.1-1 |
| yubico | pam-u2f | >= 0 < 1.3.1-1 | 1.3.1-1 |
CVSS provenance
nvdv4.07.3HIGHCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv7.3HIGH
vendor_debian7.3HIGH
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Ubuntu
PAM/U2F vulnerability
vendor_ubuntu·2025-10-06
CVE-2025-23013 PAM/U2F vulnerability
Title: PAM/U2F vulnerability
Summary: PAM/U2F could be made to crash or run programs as an administrator if it
opened a specially crafted file.
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.
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2025-23013: pam-u2f - In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. ...
vendor_debian·2025·CVSS 7.3
CVE-2025-23013 [HIGH] CVE-2025-23013: pam-u2f - In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. ...
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.
Scope: local
bookworm: resolved (fixed in 1.1.0-1.1+deb12u1)
bullseye: resolved (fixed in 1.1.0-1.1+deb11u1)
forky: resolved (fixed in 1.3.1-1)
sid: resolved (fixed in 1.3.1-1)
trixie: resolved (fixed in 1.3.1-1)
GHSA
GHSA-wwr4-cj7g-985f: In Yubico pam-u2f before 1
ghsa_unreviewed·2025-01-15
CVE-2025-23013 [HIGH] CWE-394 GHSA-wwr4-cj7g-985f: In Yubico pam-u2f before 1
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.
OSV
CVE-2025-23013: In Yubico pam-u2f before 1
osv·2025-01-15·CVSS 7.3
CVE-2025-23013 [HIGH] CVE-2025-23013: In Yubico pam-u2f before 1
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://www.yubico.com/support/security-advisories/ysa-2025-01/http://www.openwall.com/lists/oss-security/2025/01/15/1http://www.openwall.com/lists/oss-security/2025/01/16/2http://www.openwall.com/lists/oss-security/2025/01/16/3http://www.openwall.com/lists/oss-security/2025/01/16/4http://www.openwall.com/lists/oss-security/2025/01/16/5https://lists.debian.org/debian-lts-announce/2025/02/msg00001.html
2025-01-15
Published