Vulnerability Name:

CVE-2011-2500 (CCN-95695)

Assigned:2011-06-22
Published:2011-06-22
Updated:2014-03-06
Summary: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.
CVSS v3 Severity:7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
5.5 Medium (Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
5.5 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
3.2 Low (REDHAT CVSS v2 Vector: AV:A/AC:H/Au:N/C:P/I:P/A:N)
2.4 Low (REDHAT Temporal CVSS v2 Vector: AV:A/AC:H/Au:N/C:P/I:P/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-264
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2011-2500

Source: MLIST
Type: UNKNOWN
[linux-nfs] 20110622 [PATCH] nfs: fix host_reliable_addrinfo (try #2)

Source: REDHAT
Type: UNKNOWN
RHSA-2011:1534

Source: CONFIRM
Type: UNKNOWN
http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/

Source: CONFIRM
Type: UNKNOWN
http://sourceforge.net/projects/nfs/files/nfs-utils/1.2.4/Changelog-nfs-utils-1.2.4/download

Source: CCN
Type: Red Hat Bugzilla Bug 716949
(CVE-2011-2500) CVE-2011-2500 nfs-utils: Improper authentication of an incoming request when an IP based authentication used

Source: CONFIRM
Type: UNKNOWN
https://bugzilla.redhat.com/show_bug.cgi?id=716949

Source: XF
Type: UNKNOWN
nfsutils-cve20112500-code-exec(95695)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2011-2500

Vulnerable Configuration:Configuration 1:
  • cpe:/a:linux-nfs:nfs-utils:1.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:linux-nfs:nfs-utils:1.2.1:*:*:*:*:*:*:*
  • OR cpe:/a:linux-nfs:nfs-utils:1.2.2:*:*:*:*:*:*:*
  • OR cpe:/a:linux-nfs:nfs-utils:*:*:*:*:*:*:*:* (Version <= 1.2.3)

    • Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:6:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:6::client:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:6::computenode:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:6::server:*:*:*:*:*

    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:6::workstation:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:redhat:nfs_utils:1.0.9:*:*:*:*:*:*:*
  • AND
  • cpe:/a:redhat:enterprise_linux:6:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:fedora:14:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:fedora:15:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20112500
    V
    		CVE-2011-2500
    2022-05-20
    oval:org.mitre.oval:def:27486
    P
    		ELSA-2011-1534 -- nfs-utils security, bug fix, and enhancement update (low)
    2014-12-15
    oval:org.mitre.oval:def:26935
    P
    		RHSA-2011:1534 -- nfs-utils security, bug fix, and enhancement update (Low)
    2014-12-08
    oval:com.ubuntu.precise:def:20112500000
    V
    		CVE-2011-2500 on Ubuntu 12.04 LTS (precise) - low.
    2014-02-15
    oval:com.ubuntu.trusty:def:20112500000
    V
    		CVE-2011-2500 on Ubuntu 14.04 LTS (trusty) - low.
    2014-02-15
    oval:com.redhat.rhsa:def:20111534
    P
    		RHSA-2011:1534: nfs-utils security, bug fix, and enhancement update (Low)
    2011-12-06
    BACK
    linux-nfs nfs-utils 1.2.0
    linux-nfs nfs-utils 1.2.1
    linux-nfs nfs-utils 1.2.2
    linux-nfs nfs-utils *
    redhat nfs utils 1.0.9
    redhat enterprise linux 6
    redhat fedora 14
    redhat fedora 15