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AIX libC _LIB_INIT_DBG file creation vulnerability -Part 1 -AIX 5.3

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AIX libC _LIB_INIT_DBG file creation vulnerability -Part 1 -AIX 5.3

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
08/09/2009
Created
07/25/2018
Added
09/05/2014
Modified
10/05/2015

Description

There is a an error in the handling of the _LIB_INIT_DBG and _LIB_INIT_DBG_FILE environment variables in a debugging component of the XL C++ runtime library. A local user can exploit this error when executing setuid root programs linked with the XL C++ runtime library, and thereby create arbirtrary, world writeable files owned by root. The successful exploitation of this vulnerability allows a local user to create arbitrary files and execute arbitrary code as the root user. The following libraries are vulnerable: /usr/lpp/xlC/lib/libC.a

Solution(s)

  • aix-5.3-libC_advisory_1

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