Executive Summary
Summary | |
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Title | nfs-utils security, bug fix, and enhancement update |
Informations | |||
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Name | RHSA-2012:0310 | First vendor Publication | 2012-02-21 |
Vendor | RedHat | Last vendor Modification | 2012-02-21 |
Severity (Vendor) | Low | Revision | 03 |
Security-Database Scoring CVSS v3
Cvss vector : N/A | |||
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Overall CVSS Score | NA | ||
Base Score | NA | Environmental Score | NA |
impact SubScore | NA | Temporal Score | NA |
Exploitabality Sub Score | NA | ||
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:L/AC:M/Au:N/C:N/I:P/A:P) | |||
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Cvss Base Score | 3.3 | Attack Range | Local |
Cvss Impact Score | 4.9 | Attack Complexity | Medium |
Cvss Expoit Score | 3.4 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
Problem Description: An updated nfs-utils package that fixes one security issue, various bugs, and adds one enhancement is now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: The nfs-utils package provides a daemon for the kernel Network File System (NFS) server, and related tools such as the mount.nfs, umount.nfs, and showmount programs. It was found that the mount.nfs tool did not handle certain errors correctly when updating the mtab (mounted file systems table) file. A local attacker could use this flaw to corrupt the mtab file. (CVE-2011-1749) This update also fixes the following bugs: * The nfs service failed to start if the NFSv1, NFSv2, and NFSv4 support was disabled (the MOUNTD_NFS_V1="no", MOUNTD_NFS_V2="no" MOUNTD_NFS_V3="no" lines in /etc/sysconfig/nfs were uncommented) because the mountd daemon failed to handle the settings correctly. With this update, the underlying code has been modified and the nfs service starts successfully in the described scenario. (BZ#529588) * When a user's Kerberos ticket expired, the "sh rpc.gssd" messages flooded the /var/log/messages file. With this update, the excessive logging has been suppressed. (BZ#593097) * The crash simulation (SM_SIMU_CRASH) of the rpc.statd service had a vulnerability that could be detected by ISS (Internet Security Scanner). As a result, the rpc.statd service terminated unexpectedly with the following error after an ISS scan: rpc.statd[xxxx]: recv_rply: can't decode RPC message! However, the rpc.statd service ignored SM_SIMU_CRASH. This update removes the simulation crash support from the service and the problem no longer occurs. (BZ#600497) * The nfs-utils init scripts returned incorrect status codes in the following cases: if the rpcgssd and rpcsvcgssd daemon were not configured, were provided an unknown argument, their function call failed, if a program was no longer running and a /var/lock/subsys/$SERVICE file existed, if starting a service under an unprivileged user, if a program was no longer running and its pid file still existed in the /var/run/ directory. With this update, the correct codes are returned in these scenarios. (BZ#710020) * The "nfsstat -m" command did not display NFSv4 mounts. With this update, the underlying code has been modified and the command returns the list of all mounts, including any NFSv4 mounts, as expected. (BZ#712438) * Previously, the nfs manual pages described the fsc mount option; however, this option is not supported. This update removes the option description from the manual pages. (BZ#715523) * The nfs-utils preinstall scriptlet failed to change the default group ID for the nfsnobody user to 65534. This update modifies the preinstall scriptlet and the default group ID is changed to 65534 after nfs-utils upgrade as expected. (BZ#729603) * The mount.nfs command with the "-o retry" option did not try to mount for the time specified in the "retry=X" configuration option. This occurred due to incorrect error handling by the command. With this update, the underlying code has been fixed and the "-o retry" option works as expected. (BZ#736677) In addition, this update adds the following enhancement: * The noresvport option, which allows NFS clients to use insecure ports (ports above 1023), has been added to the NFS server configuration options. (BZ#513094) All nfs-utils users are advised to upgrade to this updated package, which resolves these issues and adds this enhancement. After installing this update, the nfs service will be restarted automatically. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 697975 - CVE-2011-1749 nfs-utils: mount.nfs fails to anticipate RLIMIT_FSIZE |
Original Source
Url : https://rhn.redhat.com/errata/RHSA-2012-0310.html |
CWE : Common Weakness Enumeration
% | Id | Name |
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100 % | CWE-20 | Improper Input Validation |
OVAL Definitions
Definition Id: oval:org.mitre.oval:def:21115 | |||
Oval ID: | oval:org.mitre.oval:def:21115 | ||
Title: | RHSA-2012:0310: nfs-utils security, bug fix, and enhancement update (Low) | ||
Description: | The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempts to append to the /etc/mtab file without first checking whether resource limits would interfere, which allows local users to corrupt this file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089. | ||
Family: | unix | Class: | patch |
Reference(s): | RHSA-2012:0310-03 CVE-2011-1749 | Version: | 5 |
Platform(s): | Red Hat Enterprise Linux 5 | Product(s): | nfs-utils |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:23233 | |||
Oval ID: | oval:org.mitre.oval:def:23233 | ||
Title: | ELSA-2012:0310: nfs-utils security, bug fix, and enhancement update (Low) | ||
Description: | The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempts to append to the /etc/mtab file without first checking whether resource limits would interfere, which allows local users to corrupt this file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089. | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2012:0310-03 CVE-2011-1749 | Version: | 6 |
Platform(s): | Oracle Linux 5 | Product(s): | nfs-utils |
Definition Synopsis: | |||
Definition Id: oval:org.mitre.oval:def:27789 | |||
Oval ID: | oval:org.mitre.oval:def:27789 | ||
Title: | DEPRECATED: ELSA-2012-0310 -- nfs-utils security, bug fix, and enhancement update (low) | ||
Description: | [1.0.9-60.0.1.el5] - Add support for resvport for unmonting [orabug 13567018] [1.0.9-60] - Updated idmapd.conf and idmapd.conf.man to reflect the static user name mapping (502707) - Fixed an umount regression introduced by bz 513094 (bz 781931) [1.0.9-59] - gss: turned of even more excessive syslogs (bz 593097) - mount.nfs: Ignored the SIGXFSZ when handling RLIMIT_FSIZE changes (bz 697979) [1.0.9-58] - gss: turned off more excessive syslogs (bz 593097) - initfiles: more initscripts improvements (bz 710020) - specfile: correct typo when nfsnobodys gid already exists (bz 729603) [1.0.9-57] - Mount fails to anticipate RLIMIT_FSIZE (bz 697979,CVE-2011-1749) [1.0.9-56] - Removed sim crash support (bz 600497) - initfiles: more initscripts improvements (bz 710020) - mount: Don't wait for TCP to timeout twice (bz 736677) [1.0.9-55] - mount: fixed the -o retry option to retry the given amount (bz 736677) - manpage: removed the -o fsc option (bz 715523) - nfsstat: show v4 mounts with -m flag (bz 712438) - mount: allow insecure ports with mounts (bz 513094) - gss: turned off excessive syslogs (bz 593097) - mountd: allow v2 and v3 to be disabled (bz 529588) - specfile: make sure nfsnobodys gid changes when it exists (bz 729603) - initfiles: initscripts improvements (bz 710020) | ||
Family: | unix | Class: | patch |
Reference(s): | ELSA-2012-0310 CVE-2011-1749 | Version: | 4 |
Platform(s): | Oracle Linux 5 | Product(s): | nfs-utils |
Definition Synopsis: | |||
CPE : Common Platform Enumeration
Type | Description | Count |
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Application | 5 |
OpenVAS Exploits
Date | Description |
---|---|
2012-07-09 | Name : RedHat Update for nfs-utils RHSA-2011:1534-03 File : nvt/gb_RHSA-2011_1534-03_nfs-utils.nasl |
2012-02-21 | Name : RedHat Update for nfs-utils RHSA-2012:0310-03 File : nvt/gb_RHSA-2012_0310-03_nfs-utils.nasl |
2011-12-16 | Name : Mandriva Update for nfs-utils MDVSA-2011:186 (nfs-utils) File : nvt/gb_mandriva_MDVSA_2011_186.nasl |
Open Source Vulnerability Database (OSVDB)
Id | Description |
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74350 | nfs-utils mount.nfs RLIMIT_FSIZE Local DoS |
Nessus® Vulnerability Scanner
Date | Description |
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2014-11-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0168.nasl - Type : ACT_GATHER_INFO |
2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_4_nfs-client-110701.nasl - Type : ACT_GATHER_INFO |
2013-07-12 | Name : The remote Oracle Linux host is missing a security update. File : oraclelinux_ELSA-2012-0310.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20111206_nfs_utils_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20120221_nfs_utils_on_SL5_x.nasl - Type : ACT_GATHER_INFO |
2012-02-21 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0310.nasl - Type : ACT_GATHER_INFO |
2011-12-13 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-186.nasl - Type : ACT_GATHER_INFO |
2011-12-06 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1534.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2014-03-11 13:26:17 |
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2014-02-27 17:23:35 |
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2014-02-26 21:25:27 |
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2014-02-17 11:55:43 |
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