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FreeBSD "strfmon()" Multiple Integer Overflows
Secunia Advisory: SA29574
Release Date: 2008-03-28
Popularity: 5,229 views

Critical:
Less critical
Impact: DoS
System access
Where: From remote
Solution Status: Unpatched

OS:FreeBSD 6.x

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CVE reference:CVE-2008-1391


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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