Vulnerability CVE-2012-2375

Vulnerability Name:

CVE-2012-2375 (CCN-76278)

Assigned:

2012-03-22

Published:

2012-03-22

Updated:

2023-02-13

Summary:

The __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the NFSv4 implementation in the Linux kernel before 3.3.2 uses an incorrect length variable during a copy operation, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words in an FATTR4_ACL reply.
Note: this vulnerability exists because of an incomplete fix for CVE-2011-4131.

CVSS v3 Severity:

5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

CVSS v2 Severity:

4.6 Medium (CVSS v2 Vector: AV:A/AC:H/Au:N/C:N/I:N/A:C)
3.4 Low (Temporal CVSS v2 Vector: AV:A/AC:H/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Adjacent_Network Access Complexity (AC): High Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
4.0 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

4.6 Medium (REDHAT CVSS v2 Vector: AV:A/AC:H/Au:N/C:N/I:N/A:C)
3.4 Low (REDHAT Temporal CVSS v2 Vector: AV:A/AC:H/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)

Exploitability Metrics:	Access Vector (AV): Adjacent_Network Access Complexity (AC): High Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2012-2375

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: Linux Kernel GIT Repository
Fix length of buffer copied in __nfs4_get_acl_uncached

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: RHSA-2012-1580
Moderate: kernel security, bug fix and enhancement update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: RHSA-2013-0566
Important: kernel-rt security and bug fix update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: Red Hat Bugzilla Bug 822869
CVE-2012-2375 kernel: incomplete fix for CVE-2011-4131

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: XF
Type: UNKNOWN
kernel-nfs4getacluncached-dos(76278)

Source: secalert@redhat.com
Type: Exploit, Patch
secalert@redhat.com

Vulnerable Configuration:

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:/o:linux:linux_kernel:3.3:rc7:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3:rc4:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3:rc3:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3:rc6:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3:rc5:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3:rc2:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3:rc1:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3:-:*:*:*:*:*:*

OR cpe:/o:linux:linux_kernel:3.3.1:*:*:*:*:*:*:*

AND

cpe:/o:redhat:enterprise_linux:6:*:server:*:*:*:*:*

OR cpe:/o:redhat:enterprise_linux:6:*:workstation:*:*:*:*:*

OR cpe:/o:redhat:enterprise_linux_desktop:6:*:*:*:*:*:*:*

OR cpe:/o:redhat:enterprise_linux_hpc_node:6:*:*:*:*:*:*:*

OR cpe:/o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:20122375	V	CVE-2012-2375	2022-05-20
oval:org.mitre.oval:def:26913	P	ELSA-2012-2047 -- Unbreakable Enterprise kernel security update (moderate)	2014-12-15
oval:org.mitre.oval:def:17787	P	USN-1490-1 -- linux-lts-backport-natty vulnerabilities	2014-06-30
oval:org.mitre.oval:def:17193	P	USN-1487-1 -- linux vulnerability	2014-06-30
oval:org.mitre.oval:def:17853	P	USN-1494-1 -- linux-ti-omap4 vulnerability	2014-06-30
oval:org.mitre.oval:def:17577	P	USN-1489-1 -- linux-lts-backport-oneiric vulnerability	2014-06-30
oval:org.mitre.oval:def:17898	P	USN-1486-1 -- linux vulnerability	2014-06-30
oval:org.mitre.oval:def:17606	P	USN-1499-1 -- linux-ti-omap4 vulnerability	2014-06-30
oval:org.mitre.oval:def:17924	P	USN-1488-1 -- linux vulnerabilities	2014-06-30
oval:org.mitre.oval:def:17179	P	USN-1530-1 -- Linux kernel (OMAP4) vulnerabilities	2014-06-30
oval:org.mitre.oval:def:23871	P	ELSA-2012:1580: kernel security, bug fix and enhancement update (Moderate)	2014-05-26
oval:org.mitre.oval:def:20699	P	RHSA-2012:1580: kernel security, bug fix and enhancement update (Moderate)	2014-02-24
oval:com.redhat.rhsa:def:20121580	P	RHSA-2012:1580: kernel security, bug fix and enhancement update (Moderate)	2012-12-18
oval:com.ubuntu.precise:def:20122375000	V	CVE-2012-2375 on Ubuntu 12.04 LTS (precise) - medium.	2012-06-13
oval:com.ubuntu.trusty:def:20122375000	V	CVE-2012-2375 on Ubuntu 14.04 LTS (trusty) - medium.	2012-06-13

BACK