The NFS implementation in Linux kernel before 2.6.31-rc6 calls certain functions without properly initializing certain data, which allows local users to cause a denial of service (NULL pointer dereference and O_DIRECT oops), as demonstrated using diotest4 from LTP.

The remote VMware ESX / ESXi host is missing a security-related patch.
It is, therefore, affected by multiple vulnerabilities, including remote code execution vulnerabilities, in several third-party libraries :

  - Apache Struts
  - glibc
  - GnuTLS
  - JRE
  - kernel
  - libxml2
  - OpenSSL
  - Perl
  - popt and rpm

From Red Hat Security Advisory 2012:0007 :

Updated kernel packages that fix multiple security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* A buffer overflow flaw was found in the way the Linux kernel's XFS file system implementation handled links with overly long path names.
A local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges by mounting a specially crafted disk. (CVE-2011-4077, Important)

* The fix for CVE-2011-2482 provided by RHSA-2011:1212 introduced a regression: on systems that do not have Security-Enhanced Linux (SELinux) in Enforcing mode, a socket lock race could occur between sctp_rcv() and sctp_accept(). A remote attacker could use this flaw to cause a denial of service. By default, SELinux runs in Enforcing mode on Red Hat Enterprise Linux 5. (CVE-2011-4348, Important)

* The proc file system could allow a local, unprivileged user to obtain sensitive information or possibly cause integrity issues.
(CVE-2011-1020, Moderate)

* A missing validation flaw was found in the Linux kernel's m_stop() implementation. A local, unprivileged user could use this flaw to trigger a denial of service. (CVE-2011-3637, Moderate)

* A flaw was found in the Linux kernel's Journaling Block Device (JBD). A local attacker could use this flaw to crash the system by mounting a specially crafted ext3 or ext4 disk. (CVE-2011-4132, Moderate)

* A flaw was found in the Linux kernel's encode_share_access() implementation. A local, unprivileged user could use this flaw to trigger a denial of service by creating a regular file on an NFSv4 (Network File System version 4) file system via mknod().
(CVE-2011-4324, Moderate)

* A flaw was found in the Linux kernel's NFS implementation. A local, unprivileged user could use this flaw to cause a denial of service.
(CVE-2011-4325, Moderate)

* A missing boundary check was found in the Linux kernel's HFS file system implementation. A local attacker could use this flaw to cause a denial of service or escalate their privileges by mounting a specially crafted disk. (CVE-2011-4330, Moderate)

Red Hat would like to thank Kees Cook for reporting CVE-2011-1020, and Clement Lecigne for reporting CVE-2011-4330.

This update also fixes several bugs and adds one enhancement.
Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect.

a. vCenter and ESX update to JRE 1.6.0 Update 31

   The Oracle (Sun) JRE is updated to version 1.6.0_31, which    addresses multiple security issues. Oracle has documented the    CVE identifiers that are addressed by this update in the Oracle    Java SE Critical Patch Update Advisory of February 2012.

b. vCenter Update Manager update to JRE 1.5.0 Update 36

   The Oracle (Sun) JRE is updated to 1.5.0_36 to address multiple    security issues.  Oracle has documented the CVE identifiers that    are addressed in JRE 1.5.0_36 in the Oracle Java SE Critical    Patch Update Advisory for June 2012.

c. Update to ESX/ESXi userworld OpenSSL library

   The ESX/ESXi userworld OpenSSL library is updated from version    0.9.8p to version 0.9.8t to resolve multiple security issues.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the names CVE-2010-4180, CVE-2010-4252,    CVE-2011-0014, CVE-2011-4108, CVE-2011-4109, CVE-2011-4576,    CVE-2011-4577, CVE-2011-4619, and CVE-2012-0050 to these issues.

d. Update to ESX service console OpenSSL RPM

   The service console OpenSSL RPM is updated to version    0.9.8e-22.el5_8.3 to resolve a security issue.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the name CVE-2012-2110 to this issue.

e. Update to ESX service console kernel

   The ESX service console kernel is updated to resolve multiple    security issues.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the names CVE-2011-1833, CVE-2011-2484,    CVE-2011-2496, CVE-2011-3188, CVE-2011-3209, CVE-2011-3363,    CVE-2011-4110, CVE-2011-1020, CVE-2011-4132, CVE-2011-4324,    CVE-2011-4325, CVE-2012-0207, CVE-2011-2699, and CVE-2012-1583    to these issues.

f. Update to ESX service console Perl RPM

   The ESX service console Perl RPM is updated to    perl-5.8.8.32.1.8999.vmw to resolve multiple security issues.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the names CVE-2010-2761, CVE-2010-4410, and    CVE-2011-3597 to these issues.

g. Update to ESX service console libxml2 RPMs

   The ESX service console libmxl2 RPMs are updated to    libxml2-2.6.26-2.1.15.el5_8.2 and    libxml2-python-2.6.26-2.1.15.el5_8.2 to resolve a security    issue.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the name CVE-2012-0841 to this issue.

h. Update to ESX service console glibc RPM

   The ESX service console glibc RPM is updated to version    glibc-2.5-81.el5_8.1 to resolve multiple security issues.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)   has assigned the names CVE-2009-5029, CVE-2009-5064,    CVE-2010-0830, CVE-2011-1089, CVE-2011-4609, and CVE-2012-0864    to these issue.

i. Update to ESX service console GnuTLS RPM

   The ESX service console GnuTLS RPM is updated to version    1.4.1-7.el5_8.2 to resolve multiple security issues.

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the names CVE-2011-4128, CVE-2012-1569, and    CVE-2012-1573 to these issues.

j. Update to ESX service console popt, rpm, rpm-libs,    and rpm-python RPMS

   The ESX service console popt, rpm, rpm-libs, and rpm-python RPMS    are updated to the following versions to resolve multiple    security issues :
      - popt-1.10.2.3-28.el5_8
      - rpm-4.4.2.3-28.el5_8
      - rpm-libs-4.4.2.3-28.el5_8
      - rpm-python-4.4.2.3-28.el5_8

   The Common Vulnerabilities and Exposures project (cve.mitre.org)    has assigned the name CVE-2012-0060, CVE-2012-0061, and    CVE-2012-0815 to these issues.

k. Vulnerability in third-party Apache Struts component

   The version of Apache Struts in vCenter Operations has been    updated to 2.3.4 which addresses an arbitrary file overwrite    vulnerability. This vulnerability allows an attacker to create    a denial of service by overwriting arbitrary files without    authentication. The attacker would need to be on the same network    as the system where vCOps is installed.

   The Common Vulnerabilities and Exposures project (cve.mitre.org) has    assigned the name CVE-2012-0393 to this issue.

   Note: Apache struts 2.3.4 addresses the following issues as well :
   CVE-2011-5057, CVE-2012-0391, CVE-2012-0392, CVE-2012-0394. It    was found that these do not affect vCOps.

   VMware would like to thank Alexander Minozhenko from ERPScan for    reporting this issue to us.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

  - A buffer overflow flaw was found in the way the Linux     kernel's XFS file system implementation handled links     with overly long path names. A local, unprivileged user     could use this flaw to cause a denial of service or     escalate their privileges by mounting a specially     crafted disk. (CVE-2011-4077, Important)

  - The fix for CVE-2011-2482 provided by a previous update     introduced a regression: on systems that do not have     Security-Enhanced Linux (SELinux) in Enforcing mode, a     socket lock race could occur between sctp_rcv() and     sctp_accept(). A remote attacker could use this flaw to     cause a denial of service. By default, SELinux runs in     Enforcing mode on Scientific Linux 5. (CVE-2011-4348,     Important)

  - The proc file system could allow a local, unprivileged     user to obtain sensitive information or possibly cause     integrity issues. (CVE-2011-1020, Moderate)

  - A missing validation flaw was found in the Linux     kernel's m_stop() implementation. A local, unprivileged     user could use this flaw to trigger a denial of service.
    (CVE-2011-3637, Moderate)

  - A flaw was found in the Linux kernel's Journaling Block     Device (JBD). A local attacker could use this flaw to     crash the system by mounting a specially crafted ext3 or     ext4 disk. (CVE-2011-4132, Moderate)

  - A flaw was found in the Linux kernel's     encode_share_access() implementation. A local,     unprivileged user could use this flaw to trigger a     denial of service by creating a regular file on an NFSv4     (Network File System version 4) file system via mknod().
    (CVE-2011-4324, Moderate)

  - A flaw was found in the Linux kernel's NFS     implementation. A local, unprivileged user could use     this flaw to cause a denial of service. (CVE-2011-4325,     Moderate)

  - A missing boundary check was found in the Linux kernel's     HFS file system implementation. A local attacker could     use this flaw to cause a denial of service or escalate     their privileges by mounting a specially crafted disk.
    (CVE-2011-4330, Moderate)

This update also fixes several bugs and adds one enhancement.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect.

Updated kernel packages that fix multiple security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* A buffer overflow flaw was found in the way the Linux kernel's XFS file system implementation handled links with overly long path names.
A local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges by mounting a specially crafted disk. (CVE-2011-4077, Important)

* The fix for CVE-2011-2482 provided by RHSA-2011:1212 introduced a regression: on systems that do not have Security-Enhanced Linux (SELinux) in Enforcing mode, a socket lock race could occur between sctp_rcv() and sctp_accept(). A remote attacker could use this flaw to cause a denial of service. By default, SELinux runs in Enforcing mode on Red Hat Enterprise Linux 5. (CVE-2011-4348, Important)

* The proc file system could allow a local, unprivileged user to obtain sensitive information or possibly cause integrity issues.
(CVE-2011-1020, Moderate)

* A missing validation flaw was found in the Linux kernel's m_stop() implementation. A local, unprivileged user could use this flaw to trigger a denial of service. (CVE-2011-3637, Moderate)

* A flaw was found in the Linux kernel's Journaling Block Device (JBD). A local attacker could use this flaw to crash the system by mounting a specially crafted ext3 or ext4 disk. (CVE-2011-4132, Moderate)

* A flaw was found in the Linux kernel's encode_share_access() implementation. A local, unprivileged user could use this flaw to trigger a denial of service by creating a regular file on an NFSv4 (Network File System version 4) file system via mknod().
(CVE-2011-4324, Moderate)

* A flaw was found in the Linux kernel's NFS implementation. A local, unprivileged user could use this flaw to cause a denial of service.
(CVE-2011-4325, Moderate)

* A missing boundary check was found in the Linux kernel's HFS file system implementation. A local attacker could use this flaw to cause a denial of service or escalate their privileges by mounting a specially crafted disk. (CVE-2011-4330, Moderate)

Red Hat would like to thank Kees Cook for reporting CVE-2011-1020, and Clement Lecigne for reporting CVE-2011-4330.

This update also fixes several bugs and adds one enhancement.
Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect.

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0007 advisory.

  - kernel: no access restrictions of /proc/pid/* after setuid program exec (CVE-2011-1020)

  - kernel: proc: fix oops on invalid /proc/<pid>/maps access (CVE-2011-3637)

  - kernel: xfs: potential buffer overflow in xfs_readlink() (CVE-2011-4077)

  - kernel: jbd/jbd2: invalid value of first log block leads to oops (CVE-2011-4132)

  - kernel: nfsv4: mknod(2) DoS (CVE-2011-4324)

  - kernel: nfs: diotest4 from LTP crash client null pointer deref (CVE-2011-4325)

  - kernel: hfs: add sanity check for file name length (CVE-2011-4330)

  - kernel: incomplete fix for CVE-2011-2482 (CVE-2011-4348)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2012-0007.

ID	Name	Product	Family	Severity
89038	VMware ESX / ESXi Third-Party Libraries Multiple Vulnerabilities (VMSA-2012-0013) (remote check)	Nessus	Misc.	high
68427	Oracle Linux 5 : kernel (ELSA-2012-0007)	Nessus	Oracle Linux Local Security Checks	medium
61747	VMSA-2012-0013 : VMware vSphere and vCOps updates to third-party libraries	Nessus	VMware ESX Local Security Checks	critical
61215	Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20120110)	Nessus	Scientific Linux Local Security Checks	high
57485	CentOS 5 : kernel (CESA-2012:0007)	Nessus	CentOS Local Security Checks	medium
57481	RHEL 5 : kernel (RHSA-2012:0007)	Nessus	Red Hat Local Security Checks	medium
801400	CentOS RHSA-2012-0007 Security Check	Log Correlation Engine	Generic	high

Detections

Analytics

CVE-2011-4325

medium

Tenable Plugins

high

medium

critical

high

medium

medium

high