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openvasCopyright (C) 2009 E-Soft Inc.OPENVAS:136141256231063947
HistoryMay 11, 2009 - 12:00 a.m.

RedHat Security Advisory RHSA-2009:0473

2009-05-1100:00:00
Copyright (C) 2009 E-Soft Inc.
plugins.openvas.org
19

6.2 Medium

AI Score

Confidence

High

4.9 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

0.0005 Low

EPSS

Percentile

18.7%

The remote host is missing updates to the kernel announced in
advisory RHSA-2009:0473.

This update fixes the following security issues:

  • a logic error was found in the do_setlk() function of the Linux kernel
    Network File System (NFS) implementation. If a signal interrupted a lock
    request, the local POSIX lock was incorrectly created. This could cause a
    denial of service on the NFS server if a file descriptor was closed before
    its corresponding lock request returned. (CVE-2008-4307, Important)

  • a deficiency was found in the Linux kernel system call auditing
    implementation on 64-bit systems. This could allow a local, unprivileged
    user to circumvent a system call audit configuration, if that configuration
    filtered based on the syscall number or arguments.
    (CVE-2009-0834, Important)

  • the exit_notify() function in the Linux kernel did not properly reset the
    exit signal if a process executed a set user ID (setuid) application before
    exiting. This could allow a local, unprivileged user to elevate their
    privileges. (CVE-2009-1337, Important)

  • a flaw was found in the ecryptfs_write_metadata_to_contents() function of
    the Linux kernel eCryptfs implementation. On systems with a 4096 byte
    page-size, this flaw may have caused 4096 bytes of uninitialized kernel
    memory to be written into the eCryptfs file headers, leading to an
    information leak. Note: Encrypted files created on systems running the
    vulnerable version of eCryptfs may contain leaked data in the eCryptfs file
    headers. This update does not remove any leaked data. Refer to the
    Knowledgebase article in the References section for further information.
    (CVE-2009-0787, Moderate)

  • the Linux kernel implementation of the Network File System (NFS) did not
    properly initialize the file name limit in the nfs_server data structure.
    This flaw could possibly lead to a denial of service on a client mounting
    an NFS share. (CVE-2009-1336, Moderate)

For additional details on bugs fixed in this update, please visit
the referenced security advisories.

Users should upgrade to these updated packages, which contain backported
patches to correct these issues. The system must be rebooted for this
update to take effect.

# SPDX-FileCopyrightText: 2009 E-Soft Inc.
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.63947");
  script_version("2024-03-21T05:06:54+0000");
  script_tag(name:"last_modification", value:"2024-03-21 05:06:54 +0000 (Thu, 21 Mar 2024)");
  script_tag(name:"creation_date", value:"2009-05-11 20:24:31 +0200 (Mon, 11 May 2009)");
  script_cve_id("CVE-2008-4307", "CVE-2009-0787", "CVE-2009-0834", "CVE-2009-1336", "CVE-2009-1337");
  script_tag(name:"cvss_base", value:"4.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_name("RedHat Security Advisory RHSA-2009:0473");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 E-Soft Inc.");
  script_family("Red Hat Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/rhel", "ssh/login/rpms", re:"ssh/login/release=RHENT_5");
  script_tag(name:"solution", value:"Please note that this update is available via
Red Hat Network.  To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date");
  script_tag(name:"summary", value:"The remote host is missing updates to the kernel announced in
advisory RHSA-2009:0473.

This update fixes the following security issues:

  * a logic error was found in the do_setlk() function of the Linux kernel
Network File System (NFS) implementation. If a signal interrupted a lock
request, the local POSIX lock was incorrectly created. This could cause a
denial of service on the NFS server if a file descriptor was closed before
its corresponding lock request returned. (CVE-2008-4307, Important)

  * a deficiency was found in the Linux kernel system call auditing
implementation on 64-bit systems. This could allow a local, unprivileged
user to circumvent a system call audit configuration, if that configuration
filtered based on the syscall number or arguments.
(CVE-2009-0834, Important)

  * the exit_notify() function in the Linux kernel did not properly reset the
exit signal if a process executed a set user ID (setuid) application before
exiting. This could allow a local, unprivileged user to elevate their
privileges. (CVE-2009-1337, Important)

  * a flaw was found in the ecryptfs_write_metadata_to_contents() function of
the Linux kernel eCryptfs implementation. On systems with a 4096 byte
page-size, this flaw may have caused 4096 bytes of uninitialized kernel
memory to be written into the eCryptfs file headers, leading to an
information leak. Note: Encrypted files created on systems running the
vulnerable version of eCryptfs may contain leaked data in the eCryptfs file
headers. This update does not remove any leaked data. Refer to the
Knowledgebase article in the References section for further information.
(CVE-2009-0787, Moderate)

  * the Linux kernel implementation of the Network File System (NFS) did not
properly initialize the file name limit in the nfs_server data structure.
This flaw could possibly lead to a denial of service on a client mounting
an NFS share. (CVE-2009-1336, Moderate)

For additional details on bugs fixed in this update, please visit
the referenced security advisories.

Users should upgrade to these updated packages, which contain backported
patches to correct these issues. The system must be rebooted for this
update to take effect.");
  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");
  script_xref(name:"URL", value:"http://rhn.redhat.com/errata/RHSA-2009-0473.html");
  script_xref(name:"URL", value:"http://www.redhat.com/security/updates/classification/#important");
  script_xref(name:"URL", value:"http://kbase.redhat.com/faq/docs/DOC-16748");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

res = "";
report = "";
if ((res = isrpmvuln(pkg:"kernel", rpm:"kernel~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-PAE", rpm:"kernel-PAE~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-PAE-debuginfo", rpm:"kernel-PAE-debuginfo~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-PAE-devel", rpm:"kernel-PAE-devel~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-debug", rpm:"kernel-debug~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-debug-debuginfo", rpm:"kernel-debug-debuginfo~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-debug-devel", rpm:"kernel-debug-devel~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-debuginfo", rpm:"kernel-debuginfo~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-debuginfo-common", rpm:"kernel-debuginfo-common~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-headers", rpm:"kernel-headers~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-xen", rpm:"kernel-xen~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-xen-debuginfo", rpm:"kernel-xen-debuginfo~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-xen-devel", rpm:"kernel-xen-devel~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-doc", rpm:"kernel-doc~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-kdump", rpm:"kernel-kdump~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-kdump-debuginfo", rpm:"kernel-kdump-debuginfo~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}
if ((res = isrpmvuln(pkg:"kernel-kdump-devel", rpm:"kernel-kdump-devel~2.6.18~128.1.10.el5", rls:"RHENT_5")) != NULL) {
    report += res;
}

if (report != "") {
    security_message(data:report);
} else if (__pkg_match) {
    exit(99);
}

6.2 Medium

AI Score

Confidence

High

4.9 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

0.0005 Low

EPSS

Percentile

18.7%