pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, multiple pam_usb helper tools resolved external binaries through the PATH environment variable rather than using absolute paths. An attacker who can influence the process environment during PAM authentication or tool execution could substitute malicious binaries. The affected tools are pamusb-check (src/tmux.c), pamusb-conf (tools/pamusb-conf), and pamusb-keyring-unlock-gnome (tools/pamusb-keyring-unlock-gnome). This vulnerability is fixed in 0.9.0.
Metrics
Affected Vendors & Products
References
History
Sat, 30 May 2026 02:15:00 +0000
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ssvc
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Fri, 29 May 2026 16:00:00 +0000
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Mcdope
Mcdope pam Usb |
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| Vendors & Products |
Mcdope
Mcdope pam Usb |
Wed, 27 May 2026 20:15:00 +0000
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| Description | pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, multiple pam_usb helper tools resolved external binaries through the PATH environment variable rather than using absolute paths. An attacker who can influence the process environment during PAM authentication or tool execution could substitute malicious binaries. The affected tools are pamusb-check (src/tmux.c), pamusb-conf (tools/pamusb-conf), and pamusb-keyring-unlock-gnome (tools/pamusb-keyring-unlock-gnome). This vulnerability is fixed in 0.9.0. | |
| Title | pam_usb: Uncontrolled search path in pam_usb tools allows privilege escalation via PATH manipulation | |
| Weaknesses | CWE-427 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-05-27T20:02:38.484Z
Updated: 2026-05-30T01:47:21.108Z
Reserved: 2026-05-18T23:03:37.230Z
Link: CVE-2026-47274
Updated: 2026-05-30T01:47:15.707Z
Status : Deferred
Published: 2026-05-27T20:16:40.013
Modified: 2026-05-28T13:57:25.390
Link: CVE-2026-47274
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