CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
AI Score
Confidence
High
EPSS
Percentile
46.9%
The remote host is missing an update for the
# SPDX-FileCopyrightText: 2012 Greenbone AG
# 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
if(description)
{
script_xref(name:"URL", value:"http://lists.centos.org/pipermail/centos-announce/2012-January/018384.html");
script_oid("1.3.6.1.4.1.25623.1.0.881102");
script_version("2023-07-10T08:07:43+0000");
script_tag(name:"last_modification", value:"2023-07-10 08:07:43 +0000 (Mon, 10 Jul 2023)");
script_tag(name:"creation_date", value:"2012-07-30 16:08:56 +0530 (Mon, 30 Jul 2012)");
script_cve_id("CVE-2012-0056");
script_tag(name:"cvss_base", value:"6.9");
script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:C/I:C/A:C");
script_xref(name:"CESA", value:"2012:0052");
script_name("CentOS Update for kernel CESA-2012:0052 centos6");
script_tag(name:"summary", value:"The remote host is missing an update for the 'kernel'
package(s) announced via the referenced advisory.");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2012 Greenbone AG");
script_family("CentOS Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/centos", "ssh/login/rpms", re:"ssh/login/release=CentOS6");
script_tag(name:"affected", value:"kernel on CentOS 6");
script_tag(name:"solution", value:"Please install the updated packages.");
script_tag(name:"insight", value:"The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issue:
* It was found that permissions were not checked properly in the Linux
kernel when handling the /proc/[pid]/mem writing functionality. A local,
unprivileged user could use this flaw to escalate their privileges. Refer
to Red Hat Knowledgebase article DOC-69129, linked to in the References,
for further information. (CVE-2012-0056, Important)
Red Hat would like to thank JΓΌri Aedla for reporting this issue.
This update fixes the following bugs:
* The RHSA-2011:1849 kernel update introduced a bug in the Linux kernel
scheduler, causing a 'WARNING: at kernel/sched.c:5915 thread_return'
message and a call trace to be logged. This message was harmless, and was
not due to any system malfunctions or adverse behavior. With this update,
the WARN_ON_ONCE() call in the scheduler that caused this harmless message
has been removed. (BZ#768288)
* The RHSA-2011:1530 kernel update introduced a regression in the way
the Linux kernel maps ELF headers for kernel modules into kernel memory.
If a third-party kernel module is compiled on a Red Hat Enterprise Linux
system with a kernel prior to RHSA-2011:1530, then loading that module on
a system with RHSA-2011:1530 kernel would result in corruption of one byte
in the memory reserved for the module. In some cases, this could prevent
the module from functioning correctly. (BZ#769595)
* On some SMP systems the tsc may erroneously be marked as unstable during
early system boot or while the system is under heavy load. A 'Clocksource
tsc unstable' message was logged when this occurred. As a result the system
would switch to the slower access, but higher precision HPET clock.
The 'tsc=reliable' kernel parameter is supposed to avoid this problem by
indicating that the system has a known good clock, however, the parameter
only affected run time checks. A fix has been put in to avoid the boot
time checks so that the TSC remains as the clock for the duration of
system runtime. (BZ#755867)
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");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-rpm.inc");
release = rpm_get_ssh_release();
if(!release)
exit(0);
res = "";
if(release == "CentOS6")
{
if ((res = isrpmvuln(pkg:"kernel", rpm:"kernel~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"kernel-debug", rpm:"kernel-debug~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"kernel-debug-devel", rpm:"kernel-debug-devel~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"kernel-doc", rpm:"kernel-doc~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"kernel-firmware", rpm:"kernel-firmware~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"kernel-headers", rpm:"kernel-headers~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"perf", rpm:"perf~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if ((res = isrpmvuln(pkg:"python-perf", rpm:"python-perf~2.6.32~220.4.1.el6", rls:"CentOS6")) != NULL)
{
security_message(data:res);
exit(0);
}
if (__pkg_match) exit(99);
exit(0);
}