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Shadow "passwd_check()" Security Bypass Vulnerability
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Secunia Advisory:
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SA13028
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Release Date:
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2004-10-29
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Last Update:
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2004-11-10
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Popularity:
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10,049 views
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Critical:
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Less critical
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Impact:
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Security Bypass
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Where:
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Local system
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Solution Status:
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Vendor Patch
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| Software: | Shadow 4.x
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| CVE reference: | CVE-2004-1001
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Description:
Martin Schulze has reported a vulnerability in Shadow, which can be exploited by malicious, local users to bypass certain security restrictions.
The vulnerability is caused due to an input validation error in the function "passwd_check()" in "libmisc/pwdcheck.c", which is used by the "chfn" and "chsh" utilities.
Successful exploitation allows unauthorised modification of account properties.
The vulnerability has been reported in version 4.0.4.1. Other versions may also be affected.
Solution:
Update to version 4.0.6.
ftp://ftp.pld.org.pl/software/shadow/
Provided and/or discovered by:
Martin Schulze
Changelog:
2004-11-05: Added CVE reference.
2004-11-10: Updated "Solution" section.
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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