National Cyber Awareness System

Vulnerability Summary for CVE-2008-3911

Overview

The proc_do_xprt function in net/sunrpc/sysctl.c in the Linux kernel 2.6.26.3 does not check the length of a certain buffer obtained from userspace, which allows local users to overflow a stack-based buffer and have unspecified other impact via a crafted read system call for the /proc/sys/sunrpc/transports file.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/05/2008)

Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5 or Red Hat Enterprise MRG.

References to Advisories, Solutions, and Tools

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External Source: XF

Name: linux-kernel-procdoxprt-bo(45136)

Hyperlink:http://xforce.iss.net/xforce/xfdb/45136

External Source: BID

Name: 31937

Hyperlink:http://www.securityfocus.com/bid/31937

External Source: MLIST

Name: [oss-security] 20080904 CVE request: kernel: sunrpc: fix possible overrun on read of /proc/sys/sunrpc/transports

Hyperlink:http://www.openwall.com/lists/oss-security/2008/09/04/2

External Source: MLIST

Name: [linux-kernel] 20080830 Re: buffer overflow in /proc/sys/sunrpc/transports

Hyperlink:http://lkml.org/lkml/2008/8/30/184

External Source: MLIST

Name: [linux-kernel] 20080830 buffer overflow in /proc/sys/sunrpc/transports

Hyperlink:http://lkml.org/lkml/2008/8/30/140

External Source: SUSE

Name: SUSE-SA:2008:053

Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00010.html

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=27df6f25ff218072e0e879a96beeb398a79cdbc8

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=27df6f25ff218072e0e879a96beeb398a79cdbc8