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TITLE:
Linux Kernel Memory Leak Weaknesses

SECUNIA ADVISORY ID:
SA43806

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43806/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43806

RELEASE DATE:
2011-03-22

DISCUSS ADVISORY:
http://secunia.com/advisories/43806/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/43806/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=43806

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DESCRIPTION:
Some weaknesses have been reported in the Linux Kernel, which can be
exploited by malicious, local users to disclose system information.

1) The "do_replace()", "compat_do_replace()", and "do_arpt_get_ctl()"
functions in net/ipv4/netfilter/arp_tables.c do not properly terminate
members of certain structures, which can be exploited to disclose
certain kernel memory.

2) The "do_replace()", "compat_do_replace()", and "do_ipt_get_ctl()"
functions in net/ipv4/netfilter/ip_tables.c do not properly terminate
members of certain structures, which can be exploited to disclose
certain kernel memory.

3) The "do_replace()", "compat_do_replace()", and "do_ip6t_get_ctl()"
functions in net/ipv6/netfilter/ip6_tables.c do not properly terminate
members of certain structures, which can be exploited to disclose
certain kernel memory.

Successful exploitation of these weaknesses requires "CAP_NET_ADMIN"
capabilities.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
Vasiliy Kulikov

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=42eab94fff18cb1091d3501cd284d6bd6cc9c143
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=78b79876761b86653df89c48a7010b5cbd41a84a
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=6a8ab060779779de8aea92ce3337ca348f973f54

OTHER REFERENCES:
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http://secunia.com/products/corporate/EVM/

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EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
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EXPLOIT:
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http://secunia.com/products/corporate/EVM/

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About:
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