RHSA-2001:132

Vulnerability from csaf_redhat - Published: 2001-10-16 19:15 - Updated: 2026-01-13 20:57
Summary
Red Hat Security Advisory: : New util-linux packages available to fix /bin/login pam problem
Severity
Important
Notes
Topic: New util-linux packages are available that fix a problem with /bin/login's PAM implementation. This could, in some non-default setups, cause users to receive credentials of other users. It is recommended that all users update to the fixed packages. 2001-10-22: Packages are now available for Red Hat Linux 7.2. Notably, these packages also fix the problem noted in RHSA-2001:095-04 (vipw incorrectly setting permissions on some files) - this bug was accidentally reintroduced in Red Hat Linux 7.2.
Details: A problem existed in /bin/login's PAM implementation; it stored the value of a static pwent buffer across PAM calls; when used with some PAM modules in non-default configuration (such as pam_limits), it would overwrite the buffer, causing a user to get credentials of another user. Thanks go to Tarhon-Onu Victor <mituc@ac.tuiasi.ro> for bringing the problem to our attention, and to Olaf Kirch <okir@caldera.de> for providing the patch.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2001-1147

The PAM implementation in /bin/login of the util-linux package before 2.11 causes a password entry to be rewritten across multiple PAM calls, which could provide the credentials of one user to a different user, when used in certain PAM modules such as pam_limits.

Affected products
Product Identifier Version Remediation
Red Hat Linux 7.1
Red Hat / Red Hat Linux
 cpe:/o:redhat:linux:7.1 —
Vendor Fix fix
Red Hat Linux 7.2
Red Hat / Red Hat Linux
 cpe:/o:redhat:linux:7.2 —
Vendor Fix fix
Threats
Impact Important
CVE-2001-1175

vipw in the util-linux package before 2.10 causes /etc/shadow to be world-readable in some cases, which would make it easier for local users to perform brute force password guessing.

Affected products
Fixed 2 products, the same list as for CVE-2001-1147
Threats
Impact Moderate
References
To clipboard 

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}



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