A flaw was found in the way the Linux kernel handled the creation of temporary IPv6 addresses. If the IPv6 privacy extension was enabled (/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to ‘2’), an attacker on the local network could disable IPv6 temporary address generation, leading to a potential information disclosure. (CVE-2013-0343, Moderate)
An information leak flaw was found in the way Linux kernel’s device mapper subsystem, under certain conditions, interpreted data written to snapshot block devices. An attacker could use this flaw to read data from disk blocks in free space, which are normally inaccessible. (CVE-2013-4299, Moderate)
An off-by-one flaw was found in the way the ANSI CPRNG implementation in the Linux kernel processed non-block size aligned requests. This could lead to random numbers being generated with less bits of entropy than expected when ANSI CPRNG was used. (CVE-2013-4345, Moderate)
An information leak flaw was found in the way Xen hypervisor emulated the OUTS instruction for 64-bit paravirtualized guests. A privileged guest user could use this flaw to leak hypervisor stack memory to the guest. (CVE-2013-4368, Moderate)
This update also fixes the following bug :
The system must be rebooted for this update to take effect.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(70577);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");
script_cve_id("CVE-2013-0343", "CVE-2013-4299", "CVE-2013-4345", "CVE-2013-4368");
script_name(english:"Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20131022)");
script_summary(english:"Checks rpm output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Scientific Linux host is missing one or more security
updates."
);
script_set_attribute(
attribute:"description",
value:
" - A flaw was found in the way the Linux kernel handled the
creation of temporary IPv6 addresses. If the IPv6
privacy extension was enabled
(/proc/sys/net/ipv6/conf/eth0/use_tempaddr is set to
'2'), an attacker on the local network could disable
IPv6 temporary address generation, leading to a
potential information disclosure. (CVE-2013-0343,
Moderate)
- An information leak flaw was found in the way Linux
kernel's device mapper subsystem, under certain
conditions, interpreted data written to snapshot block
devices. An attacker could use this flaw to read data
from disk blocks in free space, which are normally
inaccessible. (CVE-2013-4299, Moderate)
- An off-by-one flaw was found in the way the ANSI CPRNG
implementation in the Linux kernel processed non-block
size aligned requests. This could lead to random numbers
being generated with less bits of entropy than expected
when ANSI CPRNG was used. (CVE-2013-4345, Moderate)
- An information leak flaw was found in the way Xen
hypervisor emulated the OUTS instruction for 64-bit
paravirtualized guests. A privileged guest user could
use this flaw to leak hypervisor stack memory to the
guest. (CVE-2013-4368, Moderate)
This update also fixes the following bug :
- A bug in the GFS2 code prevented glock work queues from
freeing glock- related memory while the glock memory
shrinker repeatedly queued a large number of demote
requests, for example when performing a simultaneous
backup of several live GFS2 volumes with a large file
count. As a consequence, the glock work queues became
overloaded which resulted in a high CPU usage and the
GFS2 file systems being unresponsive for a significant
amount of time. A patch has been applied to alleviate
this problem by calling the yield() function after
scheduling a certain amount of tasks on the glock work
queues. The problem can now occur only with extremely
high work loads.
The system must be rebooted for this update to take effect."
);
# https://listserv.fnal.gov/scripts/wa.exe?A2=ind1310&L=scientific-linux-errata&T=0&P=2367
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?28c9bff8"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-PAE");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-PAE-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-PAE-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debug-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-xen");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-xen-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:kernel-xen-devel");
script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
script_set_attribute(attribute:"vuln_publication_date", value:"2013/02/28");
script_set_attribute(attribute:"patch_publication_date", value:"2013/10/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/24");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Scientific Linux Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 5.x", "Scientific Linux " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
flag = 0;
if (rpm_check(release:"SL5", reference:"kernel-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", cpu:"i386", reference:"kernel-PAE-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", cpu:"i386", reference:"kernel-PAE-debuginfo-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", cpu:"i386", reference:"kernel-PAE-devel-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-debug-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-debug-debuginfo-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-debug-devel-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-debuginfo-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-debuginfo-common-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-devel-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-doc-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-headers-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-xen-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-xen-debuginfo-2.6.18-371.1.2.el5")) flag++;
if (rpm_check(release:"SL5", reference:"kernel-xen-devel-2.6.18-371.1.2.el5")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel / kernel-PAE / kernel-PAE-debuginfo / kernel-PAE-devel / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fermilab | scientific_linux | kernel | p-cpe:/a:fermilab:scientific_linux:kernel |
fermilab | scientific_linux | kernel-pae | p-cpe:/a:fermilab:scientific_linux:kernel-pae |
fermilab | scientific_linux | kernel-pae-debuginfo | p-cpe:/a:fermilab:scientific_linux:kernel-pae-debuginfo |
fermilab | scientific_linux | kernel-pae-devel | p-cpe:/a:fermilab:scientific_linux:kernel-pae-devel |
fermilab | scientific_linux | kernel-debug | p-cpe:/a:fermilab:scientific_linux:kernel-debug |
fermilab | scientific_linux | kernel-debug-debuginfo | p-cpe:/a:fermilab:scientific_linux:kernel-debug-debuginfo |
fermilab | scientific_linux | kernel-debug-devel | p-cpe:/a:fermilab:scientific_linux:kernel-debug-devel |
fermilab | scientific_linux | kernel-debuginfo | p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo |
fermilab | scientific_linux | kernel-debuginfo-common | p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common |
fermilab | scientific_linux | kernel-devel | p-cpe:/a:fermilab:scientific_linux:kernel-devel |