Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2011-2500 | First vendor Publication | 2014-02-15 |
| Vendor | Cve | Last vendor Modification | 2014-03-06 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| 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:N/AC:L/Au:N/C:P/I:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 7.5 | Attack Range | Network |
| Cvss Impact Score | 6.4 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| The host_reliable_addrinfo function in support/export/hostname.c in nfs-utils before 1.2.4 does not properly use DNS to verify access to NFS exports, which allows remote attackers to mount filesystems by establishing crafted DNS A and PTR records. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2500 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-264 | Permissions, Privileges, and Access Controls |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:26935 | |||
| Oval ID: | oval:org.mitre.oval:def:26935 | ||
| Title: | RHSA-2011:1534 -- nfs-utils security, bug fix, and enhancement update (Low) | ||
| Description: | The nfs-utils packages provide a daemon for the kernel Network File System (NFS) server, and related tools such as the mount.nfs, umount.nfs, and showmount programs. A flaw was found in the way nfs-utils performed IP based authentication of mount requests. In configurations where a directory was exported to a group of systems using a DNS wildcard or NIS (Network Information Service) netgroup, an attacker could possibly gain access to other directories exported to a specific host or subnet, bypassing intended access restrictions. (CVE-2011-2500) 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 several bugs and adds an enhancement. Documentation for these bug fixes and the enhancement will be available shortly from the Technical Notes document, linked to in the References section. Users of nfs-utils are advised to upgrade to these updated packages, which contain backported patches to resolve these issues and add this enhancement. After installing this update, the nfs service will be restarted automatically. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:1534 CVE-2011-1749 CVE-2011-2500 | Version: | 3 |
| Platform(s): | Red Hat Enterprise Linux 6 | Product(s): | nfs-utils |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:27486 | |||
| Oval ID: | oval:org.mitre.oval:def:27486 | ||
| Title: | ELSA-2011-1534 -- nfs-utils security, bug fix, and enhancement update (low) | ||
| Description: | [1.2.3-15] - mout.nfs: Don't roll back to IPv4 whe IPv6 fails (bz 744657) - rpcdebug: Added pNFS and FSCache debugging (bz 747400) [1.2.3-14] - mount.nfs: Backported how upstream handles the SIGXFSZ signal (bz 697981) [1.2.3-13] - mount.nfs: Reworked the code that deals with RLIMIT_FSIZE (bz 697981) [1.2.3-12] - Removed the stripping of debugging information from rpcdebug (bz 729001) [1.2.3-11] - mount.nfs: Fixed problem in mount error verbosity patch (bz 731693) [1.2.3-10] - mount.nfs: add error verbosity to invalid versions (bz 731693) [1.2.3-9] - umount.nfs: Got IPV6 unmounts working again (bz 732673) - mountd: return multiple hosts exporting the same directory (bz 726112) - mount: Better error message for invalid version (bz 723780) [1.2.3-8] - initscripts: just try to mount rpc_pipefs always (bz 692702) - Rely on crypto module autoloading in init scripts - svcgssd: Document '-n' for svcgssd (bz 697359) - mount.nfs: anticipate RLIMIT_FSIZE (bz 697981) - exportfs manpage: Ipv6 update (bz 715078) - mountd: Stop segfault in mtab code (bz 723438) - exportfs: wilcards in exports can lead to unintended mounts (bz 715391) - umount: allow spaces in unmount paths (bz 702273) - specfile: reordered how libgssglue is linked in (bz 720479) | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011-1534 CVE-2011-1749 CVE-2011-2500 | Version: | 3 |
| Platform(s): | Oracle Linux 6 | Product(s): | nfs-utils |
| Definition Synopsis: | |||
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| 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 |
| 2011-07-12 | Name : Fedora Update for nfs-utils FEDORA-2011-8934 File : nvt/gb_fedora_2011_8934_nfs-utils_fc15.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 77565 | nfs-utils Mount Request Directory Export Access Restriction Bypass |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 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 |
| 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 |
| 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 |
| 2011-07-11 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_nfs-client-110701.nasl - Type : ACT_GATHER_INFO |
| 2011-07-07 | Name : The remote Fedora host is missing a security update. File : fedora_2011-8934.nasl - Type : ACT_GATHER_INFO |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2024-02-02 12:15:10 |
|
| 2021-05-04 12:14:43 |
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| 2021-04-22 01:16:02 |
|
| 2020-05-23 01:44:49 |
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| 2020-05-23 00:28:56 |
|
| 2014-06-14 13:31:01 |
|
| 2014-03-06 13:21:48 |
|
| 2014-02-18 21:20:59 |
|
| 2014-02-17 11:03:18 |
|
| 2014-02-15 17:18:51 |
|
