National Vulnerability Database (NVD) National Vulnerability Database (CVE-2008-3911)

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Last updated: Tue Aug 25 21:30:39 EDT 2009

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Vulnerability Summary for CVE-2008-3911

Original release date:09/04/2008

Last revised:11/05/2008

Source: US-CERT/NIST

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 v2 Base Score:7.2 (HIGH) (AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)

Impact Subscore: 10.0

Exploitability Subscore: 3.9

CVSS Version 2 Metrics:

Access Vector: Locally exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statments (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