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IBM AIX Mail Services Authentication Vulnerability
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Secunia Advisory:
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SA23957
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Release Date:
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2007-01-29
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Last Update:
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2008-01-24
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Critical:
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Moderately critical
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Impact:
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Security Bypass
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | AIX 5.x
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Description:
A vulnerability has been reported in AIX, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to a certain variable not being initialised in the various mail services (pop3d, pop3ds, imapd, and imapds) when checking passwords during the authentication process. This can be exploited to authenticate to the services with an invalid password when the user has "rlogin" set to "false".
The vulnerability is reported in version 5.3.
Solution:
Apply interim fix:
ftp://aix.software.ibm.com/aix/efixes/security/pop3d_ifix.tar.Z
APAR for AIX 5.3.0:
IY93084 (available)
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-02-01: Added additional details.
2008-01-24: Updated "Solution" section (APAR IY93084 is available).
Original Advisory:
IBM:
http://www-1.ibm.com/support/docview.wss?uid=isg1IY93084
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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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