ID CVE-2008-1376
Summary A certain Red Hat build script for nfs-utils before 1.0.9-35z.el5_2 on Red Hat Enterprise Linux (RHEL) 5 omits TCP wrappers support, which might allow remote attackers to bypass intended access restrictions.
References
Vulnerable Configurations
  • cpe:2.3:o:redhat:enterprise_linux:5.0:-:client
    cpe:2.3:o:redhat:enterprise_linux:5.0:-:client
  • cpe:2.3:o:redhat:enterprise_linux:5.0:-:server
    cpe:2.3:o:redhat:enterprise_linux:5.0:-:server
  • cpe:2.3:a:redhat:nfs_utils:1.0.9:35z.el5_2
    cpe:2.3:a:redhat:nfs_utils:1.0.9:35z.el5_2
CVSS
Base: 7.5 (as of 01-08-2008 - 11:33)
Impact:
Exploitability:
CWE CWE-264
CAPEC
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
nessus via4
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2008-0486.NASL
    description An updated nfs-utils package that fixes a security issue is now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. The nfs-utils package provides a daemon for the kernel NFS server and related tools. A flaw was found in the nfs-utils package build. The nfs-utils package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2008-1376) Users of nfs-utils are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 43687
    published 2010-01-06
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=43687
    title CentOS 5 : nfs-utils (CESA-2008:0486)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2008-0486.NASL
    description From Red Hat Security Advisory 2008:0486 : An updated nfs-utils package that fixes a security issue is now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. The nfs-utils package provides a daemon for the kernel NFS server and related tools. A flaw was found in the nfs-utils package build. The nfs-utils package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2008-1376) Users of nfs-utils are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.
    last seen 2019-02-21
    modified 2018-08-13
    plugin id 67695
    published 2013-07-12
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67695
    title Oracle Linux 5 : nfs-utils (ELSA-2008-0486)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2008-0486.NASL
    description An updated nfs-utils package that fixes a security issue is now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. The nfs-utils package provides a daemon for the kernel NFS server and related tools. A flaw was found in the nfs-utils package build. The nfs-utils package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2008-1376) Users of nfs-utils are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.
    last seen 2019-02-21
    modified 2018-11-27
    plugin id 33783
    published 2008-08-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=33783
    title RHEL 5 : nfs-utils (RHSA-2008:0486)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2009-0955.NASL
    description An updated nfs-utils package that fixes a security issue and multiple bugs is now available for Red Hat Enterprise Linux 4. This update has been rated as having moderate security impact by the Red Hat Security Response Team. The nfs-utils package provides a daemon for the kernel NFS server and related tools, which provides a much higher level of performance than the traditional Linux NFS server used by most users. A flaw was found in the nfs-utils package provided by RHBA-2008:0742. The nfs-utils package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2008-1376) This update also includes the following bug fixes : * the 'nfsstat' command now displays correct statistics. In previous versions, performing more than 2^31 RPC calls could cause the 'nfsstat' command to incorrectly display the number of calls as 'negative'. This was because 'nfsstat' printed statistics from /proc/net/rpc/* files as signed integers; with this version of nfs-utils, 'nfsstat' now reads and prints these statistics as unsigned integers. (BZ#404831) * imapd upcalls now support zero-length reads and perform extra bounds checking in gssd and svcgssd. This fixes a bug in previous versions that could cause the rpc.imapd daemon to hang when communicating with the kernel, which would halt any ID translation services. (BZ#448710) * tcp_wrappers supported in nfs-utils now allows proper application of hosts access rules defined in /etc/hosts.allow and /etc/hosts.deny. (BZ#494585) * the nfs init script did not check whether SECURE_NFS was set to 'yes' before starting, stopping, or querying rpc.svcgssd. On systems where SECURE_NFS was not set to 'yes', the nfs init script could not start the rpc.svcgssd daemon at the 'service nfs start' command because the rpcsvcssd init script would check the status of SECURE_NFS before starting the daemon. However, at the 'service nfs stop' or 'service nfs restart' commands, nfs init script would attempt to stop rpc.svcgssd and then report a failure because the daemon was not running in the first place. These error messages may have misled end-users into believing that there was a genuine problem with their NFS configuration. This version of nfs-utils contains a fix backported from Red Hat Enterprise Linux 5. nfs-utils now checks the status of SECURE_NFS before the nfs init script attempts to start, query or stop rpc.svcgssd and therefore, the irrelevant error messages seen previously will not appear. (BZ#470423) * the nfs init script is now fully compliant with Linux Standard Base Core specifications. This update fixes a bug that prevented '/etc/init.d/nfs start' from exiting properly if NFS was already running. (BZ#474570) * /var/lib/nfs/statd/sm is now created with the proper user and group whenever rpc.statd is called. In previous versions, some thread stack conditions could incorrectly prevent rpc.statd from creating the /var/lib/nfs/statd/sm file, which could cause 'service nfslock start' to fail. (BZ#479376) All users of nfs-utils should upgrade to this updated package, which resolves these issues.
    last seen 2019-02-21
    modified 2018-11-27
    plugin id 38816
    published 2009-05-19
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=38816
    title RHEL 4 : nfs-utils (RHSA-2009:0955)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2009-0955.NASL
    description An updated nfs-utils package that fixes a security issue and multiple bugs is now available for Red Hat Enterprise Linux 4. This update has been rated as having moderate security impact by the Red Hat Security Response Team. The nfs-utils package provides a daemon for the kernel NFS server and related tools, which provides a much higher level of performance than the traditional Linux NFS server used by most users. A flaw was found in the nfs-utils package provided by RHBA-2008:0742. The nfs-utils package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2008-1376) This update also includes the following bug fixes : * the 'nfsstat' command now displays correct statistics. In previous versions, performing more than 2^31 RPC calls could cause the 'nfsstat' command to incorrectly display the number of calls as 'negative'. This was because 'nfsstat' printed statistics from /proc/net/rpc/* files as signed integers; with this version of nfs-utils, 'nfsstat' now reads and prints these statistics as unsigned integers. (BZ#404831) * imapd upcalls now support zero-length reads and perform extra bounds checking in gssd and svcgssd. This fixes a bug in previous versions that could cause the rpc.imapd daemon to hang when communicating with the kernel, which would halt any ID translation services. (BZ#448710) * tcp_wrappers supported in nfs-utils now allows proper application of hosts access rules defined in /etc/hosts.allow and /etc/hosts.deny. (BZ#494585) * the nfs init script did not check whether SECURE_NFS was set to 'yes' before starting, stopping, or querying rpc.svcgssd. On systems where SECURE_NFS was not set to 'yes', the nfs init script could not start the rpc.svcgssd daemon at the 'service nfs start' command because the rpcsvcssd init script would check the status of SECURE_NFS before starting the daemon. However, at the 'service nfs stop' or 'service nfs restart' commands, nfs init script would attempt to stop rpc.svcgssd and then report a failure because the daemon was not running in the first place. These error messages may have misled end-users into believing that there was a genuine problem with their NFS configuration. This version of nfs-utils contains a fix backported from Red Hat Enterprise Linux 5. nfs-utils now checks the status of SECURE_NFS before the nfs init script attempts to start, query or stop rpc.svcgssd and therefore, the irrelevant error messages seen previously will not appear. (BZ#470423) * the nfs init script is now fully compliant with Linux Standard Base Core specifications. This update fixes a bug that prevented '/etc/init.d/nfs start' from exiting properly if NFS was already running. (BZ#474570) * /var/lib/nfs/statd/sm is now created with the proper user and group whenever rpc.statd is called. In previous versions, some thread stack conditions could incorrectly prevent rpc.statd from creating the /var/lib/nfs/statd/sm file, which could cause 'service nfslock start' to fail. (BZ#479376) All users of nfs-utils should upgrade to this updated package, which resolves these issues.
    last seen 2019-02-21
    modified 2018-11-10
    plugin id 67064
    published 2013-06-29
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=67064
    title CentOS 4 : nfs-utils (CESA-2009:0955)
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20080731_NFS_UTILS_ON_SL5_X.NASL
    description A flaw was found in the nfs-utils package build. The nfs-utils package was missing TCP wrappers support, which could result in an administrator believing they had access restrictions enabled when they did not. (CVE-2008-1376)
    last seen 2019-02-21
    modified 2019-01-07
    plugin id 60458
    published 2012-08-01
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=60458
    title Scientific Linux Security Update : nfs-utils on SL5.x i386/x86_64
oval via4
accepted 2013-04-29T04:07:18.486-04:00
class vulnerability
contributors
  • name Aharon Chernin
    organization SCAP.com, LLC
  • name Dragos Prisaca
    organization G2, Inc.
definition_extensions
  • comment The operating system installed on the system is Red Hat Enterprise Linux 4
    oval oval:org.mitre.oval:def:11831
  • comment CentOS Linux 4.x
    oval oval:org.mitre.oval:def:16636
  • comment Oracle Linux 4.x
    oval oval:org.mitre.oval:def:15990
  • comment The operating system installed on the system is Red Hat Enterprise Linux 5
    oval oval:org.mitre.oval:def:11414
  • comment The operating system installed on the system is CentOS Linux 5.x
    oval oval:org.mitre.oval:def:15802
  • comment Oracle Linux 5.x
    oval oval:org.mitre.oval:def:15459
description A certain Red Hat build script for nfs-utils before 1.0.9-35z.el5_2 on Red Hat Enterprise Linux (RHEL) 5 omits TCP wrappers support, which might allow remote attackers to bypass intended access restrictions.
family unix
id oval:org.mitre.oval:def:10638
status accepted
submitted 2010-07-09T03:56:16-04:00
title A certain Red Hat build script for nfs-utils before 1.0.9-35z.el5_2 on Red Hat Enterprise Linux (RHEL) 5 omits TCP wrappers support, which might allow remote attackers to bypass intended access restrictions.
version 24
redhat via4
advisories
  • bugzilla
    id 440114
    title CVE-2008-1376 nfs-utils: missing tcp_wrappers support
    oval
    AND
    • comment Red Hat Enterprise Linux 5 is installed
      oval oval:com.redhat.rhsa:tst:20070055001
    • comment nfs-utils is earlier than 1:1.0.9-35z.el5_2
      oval oval:com.redhat.rhsa:tst:20080486002
    • comment nfs-utils is signed with Red Hat redhatrelease key
      oval oval:com.redhat.rhsa:tst:20080486003
    rhsa
    id RHSA-2008:0486
    released 2008-07-31
    severity Moderate
    title RHSA-2008:0486: nfs-utils security update (Moderate)
  • bugzilla
    id 494585
    title libwrap - Nor ip, nor hostname work,, only when used ALL expression in hosts.deny access is denied
    oval
    AND
    • comment Red Hat Enterprise Linux 4 is installed
      oval oval:com.redhat.rhsa:tst:20060016001
    • comment nfs-utils is earlier than 0:1.0.6-93.EL4
      oval oval:com.redhat.rhsa:tst:20090955002
    • comment nfs-utils is signed with Red Hat master key
      oval oval:com.redhat.rhsa:tst:20090955003
    rhsa
    id RHSA-2009:0955
    released 2009-05-18
    severity Moderate
    title RHSA-2009:0955: nfs-utils security and bug fix update (Moderate)
rpms
  • nfs-utils-1:1.0.9-35z.el5_2
  • nfs-utils-0:1.0.6-93.EL4
refmap via4
bid 30466
sectrack 1020589
secunia
  • 31322
  • 35162
xf redhat-nfsutils-weak-security(44256)
Last major update 21-08-2010 - 01:18
Published 01-08-2008 - 10:41
Last modified 28-09-2017 - 21:30
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