AIX 5.3 TL 0 : libc (IZ50500)

Medium Nessus Plugin ID 64330


The remote AIX host is missing a security patch.


There is a race condition in the MALLOCDEBUG debugging component of the malloc subsystem in the library libc.a. A local user can exploit this race condition when executing setuid root programs and thereby overwrite any file in the system.

The successful exploitation of this vulnerability allows a local user to overwrite arbitrary files and execute arbitrary code as the root user.

The following libraries are vulnerable :

/usr/ccs/lib/libc.a /usr/ccs/lib/libp/libc.a.


Install the appropriate interim fix.

See Also

Plugin Details

Severity: Medium

ID: 64330

File Name: aix_IZ50500.nasl

Version: $Revision: 1.2 $

Type: local

Published: 2013/01/30

Modified: 2013/03/11

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: cpe:/o:ibm:aix:5.3

Required KB Items: Host/AIX/lslpp, Host/local_checks_enabled, Host/AIX/version

Patch Publication Date: 2009/05/19

Vulnerability Publication Date: 2009/05/19

Reference Information

CVE: CVE-2009-1786

CWE: 362