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Linux Kernel SCTP Denial of Service Vulnerabilities
Secunia Advisory:	SA19990	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2006-05-09
Last Update:	2006-05-10
Popularity:	10,589 views

Critical:	Moderately critical
Impact:	DoS
Where:	From remote
Solution Status:	Vendor Patch

OS:	Linux Kernel 2.6.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2006-2271 CVE-2006-2272 CVE-2006-2274 CVE-2006-2275

Description: Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious people to cause a DoS (Denial of Service). 1) An incorrect use of state table entries in the SCTP code when certain ECNE chunks are received in CLOSED state can be exploited to cause kernel panic via a specially crafted packet. 2) An error in the handling of incoming IP-fragmented SCTP control chunks can be exploited to cause kernel panic via fragmented COOKIE_ECHO and HEARTBEAT chunks. 3) An infinite recursion error in the "sctp_skb_pull()" function of lksctp can be exploited to crash the system during message reassembly via a specially crafted packet that contains two or more DATA fragments of a message. 4) An deadlock error within the handling of the receive buffer in SCTP can be exploited to cause a DoS via a large number of small messages sent to a receiver application that causes it to run of receive buffer space. The vulnerabilities have been reported in version 2.6.16. Other versions may also be affected. Solution: Update to version 2.6.16.15. http://kernel.org/ Provided and/or discovered by: 1-2) Mu Security research team 3-4) Reported by vendor. Changelog: 2006-05-10: Added information of additional vulnerabilities. Updated "Description", "Solution", "Original Advisory" and credit sections. Original Advisory: http://labs.musecurity.com/advisories/MU-200605-01.txt Kernel.org: http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.15 http://www.kernel.org/git/?p=linux/ke...9baa0bb7a4064e6d0c99e8f479673120a9f28 http://www.kernel.org/git/?p=linux/ke...85c13b394cd1b74acc196f1d7990a3e0a484d http://www.kernel.org/git/?p=linux/ke...58c671804a3829d822fc3ccc3eff534b1aaa0 http://www.kernel.org/git/?p=linux/ke...a2cd09dd7b3fbc99a1879a54090fd6db16f0c

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