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TITLE:
FreeBSD "strfmon()" Multiple Integer Overflows

SECUNIA ADVISORY ID:
SA29574

VERIFY ADVISORY:
http://secunia.com/advisories/29574/

CRITICAL:
Less critical

IMPACT:
DoS, System access

WHERE:
>From remote

OPERATING SYSTEM:
FreeBSD 6.x
http://secunia.com/product/6778/

DESCRIPTION:
Maksymilian Arciemowicz has reported some vulnerabilities in FreeBSD,
which potentially can be exploited by malicious people to compromise a
vulnerable system.

The vulnerabilities are caused due to multiple integer overflows in
the libc "strfmon()" function. These can be exploited to cause a
crash or potentially execute arbitrary code via specially crafted
format specifiers.

Successful exploitation may allow execution of arbitrary code.

The vulnerabilities are reported in FreeBSD 7.0 and 6.x. Other
versions may also be affected.

SOLUTION:
Do not pass untrusted format strings to "strfmon()".

PROVIDED AND/OR DISCOVERED BY:
Maksymilian Arciemowicz, SecurityReason

ORIGINAL ADVISORY:
http://securityreason.com/achievement_securityalert/53

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