25697 : Linux Kernel Netfilter do_add_counters() Function Local Memory Disclosure
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Timeline

Disclosure Date
2006-05-22

Description

The Linux kernel contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered because of a race condition in the Linux netfilter code. The 'do_add_counters()' function in 'net/ipv4/netfilter/arp_tables.c' and 'net/ipv6/netfilter/arp_tables.c' lacks a check for a parameter that might allow 'IPT_ENTRY_ITERATE()' to read beyond its intended boundaries, potentially accessing sensitive kernel memory and hence resulting in a loss of confidentiality.

Classification

Location: Local Access Required
Attack Type: Information Disclosure
Impact: Loss of Confidentiality
Exploit: Exploit Unknown
Disclosure: OSVDB Verified, Vendor Verified

Solution

Upgrade to version 2.4.33, 2.6.16.17 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Linux

Kernel

2.6.16.16

References

CVE ID: 2006-0039 (see also: NVD)
Secunia Advisory ID: 20185 20671 20991 21476 21954 22292 22945
SCIP VulDB ID: 2254
Related OSVDB ID: 25695 25696
Vendor Specific News/Changelog Entry: http://bugs.gentoo.org/show_bug.cgi?id=133465
http://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.33
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2c8ac66bb2ff89e759f0d632a27cc64205e9ddd9
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=191698
Vendor URL: http://kernel.org/
Vendor Specific Advisory URL: http://support.avaya.com/elmodocs2/security/ASA-2006-249.htm
http://www.trustix.org/errata/2006/0051/
http://www.ubuntu.com/usn/usn-311-1
Other Advisory URL: http://www.us.debian.org/security/2006/dsa-1097
RedHat RHSA: RHSA-2006:0689

Tools & Filters

	22523 22639 22645 27886
	3469

Credit

Solar Designer - solaropenwall.com -

CVSSv2 Score

CVSSv2 Base Score = 4.7
Source: nvd.nist.gov | Generated: 2006-05-22 | Disagree? | There are 1 more: View All

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