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IPTables/Netfilter Denial of Service Vulnerabilities
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Secunia Advisory:
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SA9429
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Release Date:
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2003-08-04
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Popularity:
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12,121 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Linux Kernel 2.4.x
Linux Kernel 2.5.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Two vulnerabilities have been identified in IPTables/Netfilter, which can be exploited by malicious people to cause a DoS (Denial of Service) on a vulnerable system.
The first vulnerability is caused due to an error when the system performs NAT (Network Address Translation). Reportedly, this can in some circumstances be exploited to cause the system to crash if the modules "ip_nat_ftp" or "ip_nat_irc" has been loaded, or "CONFIG_IP_NF_NAT_FTP" or "CONFIG_IP_NF_NAT_IRC" is enabled.
The vulnerability affects version 2.4.20 of the Linux kernel and recent 2.5 kernels.
The second vulnerability is caused due to an error in the Connection Tracking when handling "UNCONFIRMED" connections. Reportedly, this can be exploited to cause the system to crash if the "ip_conntrack" module is loaded or "CONFIG_IP_NF_CONNTRACK" is enabled.
This vulnerability only affects version 2.4.20 of the Linux kernel.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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