Xinetd Connection Reject Memory Leak - Secunia Advisories - Vulnerability Intelligence

Xinetd Connection Reject Memory Leak
Secunia Advisory:	SA8632	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2003-04-22
Popularity:	10,381 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 Debian GNU/Linux unstable alias sid EnGarde Secure Community 1.x Gentoo Linux 1.x Mandrake Linux 7.x Mandrake Linux 8.x Mandrake Linux 9.x RedHat Linux 6.2 RedHat Linux 7.0 RedHat Linux 7.1 RedHat Linux 7.2 RedHat Linux 7.3 RedHat Linux 8.0 RedHat Linux 9 SuSE Linux 7.x SuSE Linux 8.x

Software:	Xinetd 2.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2003-0211

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. Solution: Update to version 2.3.11: http://www.xinetd.org/xinetd-2.3.11.tar.gz The various OS vendors have not issued updated packages at present. Provided and/or discovered by: Steve Grubb Original Advisory: http://www.xinetd.org/#changes Other References: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=88537

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