Xinetd Connection Reject Memory Leak - Secunia Advisories - Vulnerability Information

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Xinetd Connection Reject Memory Leak

Secunia Advisory:

SA8632

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Release Date:

2003-04-22

Popularity:

11,240 views

Critical:

Less critical

Impact:

DoS

Where:

From remote

Solution Status:

Vendor Patch

OS:

Conectiva Linux 6.0
Conectiva Linux 7.0
Conectiva Linux 8
Debian GNU/Linux 2.x
Debian GNU/Linux 3.0
EnGarde Secure Community 1.x
Gentoo Linux
Mandrake Linux 7.x
Mandrake Linux 8.x
Mandrake Linux 9.x
Red Hat Linux 6.2
Red Hat Linux 7.0
Red Hat Linux 7.1
Red Hat Linux 7.2
Red Hat Linux 7.3
Red Hat Linux 8.0
Red Hat Linux 9
SuSE Linux 7.x
SuSE Linux 8.x

Software:

Xinetd 2.x

Secunia CVSS-2 Score:

Available in Secunia business solutions

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Advisory Content (Page 1 of 3)

[ 1 ] [ 2 ] [ 3 ]

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Description:
A vulnerability has been identified in Xinetd, which can be exploited by malicious people to cause a DoS (Denial of Service) on a vulnerable system.

The vulnerability is caused due to an error in the function "svc_request" when connection attempts to some services are rejected. The problem is that the allocated memory is not always free'd, which results in a memory leak of 144 bytes each time a connection attempt is rejected.

This can be exploited by a malicious person to consume all available memory on a vulnerable server by trying to connect multiple times to a service configured to be run via xinetd.

Successful exploitation requires that the file "xinetd.conf" includes statements that would cause a connection to be rejected.

Change Page:
[ 1 ] [ 2 ] [ 3 ]

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