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Gentoo Linux Security Advisory GLSA 202208-11 |
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https://security.gentoo.org/ |
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Severity: Low |
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Title: Yubico pam-u2f: Local PIN Bypass vulnerability |
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Date: August 10, 2022 |
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Bugs: #792270 |
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ID: 202208-11 |
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Synopsis |
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======== |
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|
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A vulnerability has been discovered in pam-u2f which could allow a local |
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attacker to bypass PIN entry. |
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Background |
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========== |
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|
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Yubico pam-u2f is a PAM module for FIDO2 and U2F keys. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 sys-auth/pam_u2f < 1.1.1 >= 1.1.1 |
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|
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Description |
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=========== |
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|
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A logic issue in Yubico pam-u2f could result in the bypass of a PIN |
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entry requirement when authenticating with FIDO2. |
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Impact |
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====== |
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|
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An attacker with local access to certain applications using pam-u2f for authentication could incorrectly successfully authenticate without entering the authentication PIN. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All Yubico pam-u2f users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-auth/pam_u2f-1.1.1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2021-31924 |
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https://nvd.nist.gov/vuln/detail/CVE-2021-31924 |
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[ 2 ] YSA-2021-03 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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https://security.gentoo.org/glsa/202208-11 |
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|
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2022 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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https://creativecommons.org/licenses/by-sa/2.5 |
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