Vulnerabilities > CVE-2012-6638 - Resource Exhaustion vulnerability in Linux Kernel

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
linux
CWE-400
nessus
NVD
Published: 2014-02-15
Updated: 2023-11-07

Summary

The tcp_rcv_state_process function in net/ipv4/tcp_input.c in the Linux kernel before 3.2.24 allows remote attackers to cause a denial of service (kernel resource consumption) via a flood of SYN+FIN TCP packets, a different vulnerability than CVE-2012-2663.

Vulnerable Configurations

Part Description Count
OS
Linux
1399

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • XML Ping of the Death
    An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
  • XML Entity Expansion
    An attacker submits an XML document to a target application where the XML document uses nested entity expansion to produce an excessively large output XML. XML allows the definition of macro-like structures that can be used to simplify the creation of complex structures. However, this capability can be abused to create excessive demands on a processor's CPU and memory. A small number of nested expansions can result in an exponential growth in demands on memory.
  • Inducing Account Lockout
    An attacker leverages the security functionality of the system aimed at thwarting potential attacks to launch a denial of service attack against a legitimate system user. Many systems, for instance, implement a password throttling mechanism that locks an account after a certain number of incorrect log in attempts. An attacker can leverage this throttling mechanism to lock a legitimate user out of their own account. The weakness that is being leveraged by an attacker is the very security feature that has been put in place to counteract attacks.
  • Violating Implicit Assumptions Regarding XML Content (aka XML Denial of Service (XDoS))
    XML Denial of Service (XDoS) can be applied to any technology that utilizes XML data. This is, of course, most distributed systems technology including Java, .Net, databases, and so on. XDoS is most closely associated with web services, SOAP, and Rest, because remote service requesters can post malicious XML payloads to the service provider designed to exhaust the service provider's memory, CPU, and/or disk space. The main weakness in XDoS is that the service provider generally must inspect, parse, and validate the XML messages to determine routing, workflow, security considerations, and so on. It is exactly these inspection, parsing, and validation routines that XDoS targets. There are three primary attack vectors that XDoS can navigate Target CPU through recursion: attacker creates a recursive payload and sends to service provider Target memory through jumbo payloads: service provider uses DOM to parse XML. DOM creates in memory representation of XML document, but when document is very large (for example, north of 1 Gb) service provider host may exhaust memory trying to build memory objects. XML Ping of death: attack service provider with numerous small files that clog the system. All of the above attacks exploit the loosely coupled nature of web services, where the service provider has little to no control over the service requester and any messages the service requester sends.

Nessus

  • NASL familyF5 Networks Local Security Checks
    NASL idF5_BIGIP_SOL15304.NASL
    descriptionThe tcp_rcv_state_process function in net/ipv4/tcp_input.c in the Linux kernel before 3.2.24 allows remote attackers to cause a denial of service (kernel resource consumption) via a flood of SYN+FIN TCP packets.
    last seen2020-06-01
    modified2020-06-02
    plugin id78171
    published2014-10-10
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/78171
    titleF5 Networks BIG-IP : Linux kernel tcp_rcv_state_process vulnerability (SOL15304)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution SOL15304.
#
# The text description of this plugin is (C) F5 Networks.
#

include("compat.inc");

if (description)
{
  script_id(78171);
  script_version("1.4");
  script_cvs_date("Date: 2019/01/04 10:03:40");

  script_cve_id("CVE-2012-6638");
  script_bugtraq_id(65654);

  script_name(english:"F5 Networks BIG-IP : Linux kernel tcp_rcv_state_process vulnerability (SOL15304)");
  script_summary(english:"Checks the BIG-IP version.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote device is missing a vendor-supplied security patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The tcp_rcv_state_process function in net/ipv4/tcp_input.c in the
Linux kernel before 3.2.24 allows remote attackers to cause a denial
of service (kernel resource consumption) via a flood of SYN+FIN TCP
packets."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://support.f5.com/csp/article/K15304"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade to one of the non-vulnerable versions listed in the F5
Solution SOL15304."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_access_policy_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_advanced_firewall_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_acceleration_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_visibility_and_reporting");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_global_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_link_controller");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_policy_enforcement_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_wan_optimization_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_webaccelerator");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip_protocol_security_manager");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"F5 Networks Local Security Checks");

  script_dependencies("f5_bigip_detect.nbin");
  script_require_keys("Host/local_checks_enabled", "Host/BIG-IP/hotfix", "Host/BIG-IP/modules", "Host/BIG-IP/version", "Settings/ParanoidReport");

  exit(0);
}


include("f5_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
version = get_kb_item("Host/BIG-IP/version");
if ( ! version ) audit(AUDIT_OS_NOT, "F5 Networks BIG-IP");
if ( isnull(get_kb_item("Host/BIG-IP/hotfix")) ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/hotfix");
if ( ! get_kb_item("Host/BIG-IP/modules") ) audit(AUDIT_KB_MISSING, "Host/BIG-IP/modules");

sol = "SOL15304";
vmatrix = make_array();

if (report_paranoia < 2) audit(AUDIT_PARANOID);

# AFM
vmatrix["AFM"] = make_array();
vmatrix["AFM"]["affected"  ] = make_list("11.3.0-11.4.1");
vmatrix["AFM"]["unaffected"] = make_list("11.5.0-11.5.1");

# AM
vmatrix["AM"] = make_array();
vmatrix["AM"]["affected"  ] = make_list("11.4.0-11.4.1");
vmatrix["AM"]["unaffected"] = make_list("11.5.0-11.5.1");

# APM
vmatrix["APM"] = make_array();
vmatrix["APM"]["affected"  ] = make_list("11.0.0-11.4.1","10.1.0-10.2.4");
vmatrix["APM"]["unaffected"] = make_list("11.5.0-11.5.1");

# ASM
vmatrix["ASM"] = make_array();
vmatrix["ASM"]["affected"  ] = make_list("11.0.0-11.4.1","10.0.0-10.2.4");
vmatrix["ASM"]["unaffected"] = make_list("11.5.0-11.5.1");

# AVR
vmatrix["AVR"] = make_array();
vmatrix["AVR"]["affected"  ] = make_list("11.0.0-11.4.1");
vmatrix["AVR"]["unaffected"] = make_list("11.5.0-11.5.1");

# GTM
vmatrix["GTM"] = make_array();
vmatrix["GTM"]["affected"  ] = make_list("11.0.0-11.4.1","10.0.0-10.2.4");
vmatrix["GTM"]["unaffected"] = make_list("11.5.0-11.5.1");

# LC
vmatrix["LC"] = make_array();
vmatrix["LC"]["affected"  ] = make_list("11.0.0-11.4.1","10.0.0-10.2.4");
vmatrix["LC"]["unaffected"] = make_list("11.5.0-11.5.1");

# LTM
vmatrix["LTM"] = make_array();
vmatrix["LTM"]["affected"  ] = make_list("11.0.0-11.4.1","10.0.0-10.2.4");
vmatrix["LTM"]["unaffected"] = make_list("11.5.0-11.5.1");

# PEM
vmatrix["PEM"] = make_array();
vmatrix["PEM"]["affected"  ] = make_list("11.3.0-11.4.1");
vmatrix["PEM"]["unaffected"] = make_list("11.5.0-11.5.1");


if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
  if (report_verbosity > 0) security_hole(port:0, extra:bigip_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = bigip_get_tested_modules();
  audit_extra = "For BIG-IP module(s) " + tested + ",";
  if (tested) audit(AUDIT_INST_VER_NOT_VULN, audit_extra, version);
  else audit(AUDIT_HOST_NOT, "running any of the affected modules");
}
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2014-0433.NASL
    descriptionFrom Red Hat Security Advisory 2014:0433 : Updated kernel packages that fix two security issues, three 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 Moderate 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. * A flaw was found in the way the Linux kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id73721
    published2014-04-27
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/73721
    titleOracle Linux 5 : kernel (ELSA-2014-0433)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2014:0433 and 
# Oracle Linux Security Advisory ELSA-2014-0433 respectively.
#

include("compat.inc");

if (description)
{
  script_id(73721);
  script_version("1.8");
  script_cvs_date("Date: 2019/09/30 10:58:19");

  script_cve_id("CVE-2012-6638", "CVE-2013-2888");
  script_bugtraq_id(62043, 65654);
  script_xref(name:"RHSA", value:"2014:0433");

  script_name(english:"Oracle Linux 5 : kernel (ELSA-2014-0433)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2014:0433 :

Updated kernel packages that fix two security issues, three 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
Moderate 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.

* A flaw was found in the way the Linux kernel's TCP/IP protocol suite
implementation handled TCP packets with both the SYN and FIN flags
set. A remote attacker could use this flaw to consume an excessive
amount of resources on the target system, potentially resulting in a
denial of service. (CVE-2012-6638, Moderate)

* A flaw was found in the way the Linux kernel handled HID (Human
Interface Device) reports with an out-of-bounds Report ID. An attacker
with physical access to the system could use this flaw to crash the
system or, potentially, escalate their privileges on the system.
(CVE-2013-2888, Moderate)

This update also fixes the following bugs :

* A previous change to the sunrpc code introduced a race condition
between the rpc_wake_up_task() and rpc_wake_up_status() functions. A
race between threads operating on these functions could result in a
deadlock situation, subsequently triggering a 'soft lockup' event and
rendering the system unresponsive. This problem has been fixed by
re-ordering tasks in the RPC wait queue. (BZ#1073731)

* Running a process in the background on a GFS2 file system could
sometimes trigger a glock recursion error that resulted in a kernel
panic. This happened when a readpage operation attempted to take a
glock that had already been held by another function. To prevent this
error, GFS2 now verifies whether the glock is already held when
performing the readpage operation. (BZ#1073953)

* A previous patch backport to the IUCV (Inter User Communication
Vehicle) code was incomplete. Consequently, when establishing an IUCV
connection, the kernel could, under certain circumstances, dereference
a NULL pointer, resulting in a kernel panic. A patch has been applied
to correct this problem by calling the proper function when removing
IUCV paths. (BZ#1077045)

In addition, this update adds the following enhancement :

* The lpfc driver had a fixed timeout of 60 seconds for SCSI task
management commands. With this update, the lpfc driver enables the
user to set this timeout within the range from 5 to 180 seconds. The
timeout can be changed by modifying the 'lpfc_task_mgmt_tmo' parameter
for the lpfc driver. (BZ#1073123)

All kernel users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues and add this
enhancement. The system must be rebooted for this update to take
effect."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2014-April/004086.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-PAE");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-PAE-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-xen-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/04/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/27");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
include("ksplice.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 5", "Oracle 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 ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2012-6638", "CVE-2013-2888");  
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for ELSA-2014-0433");
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

kernel_major_minor = get_kb_item("Host/uname/major_minor");
if (empty_or_null(kernel_major_minor)) exit(1, "Unable to determine kernel major-minor level.");
expected_kernel_major_minor = "2.6";
if (kernel_major_minor != expected_kernel_major_minor)
  audit(AUDIT_OS_NOT, "running kernel level " + expected_kernel_major_minor + ", it is running kernel level " + kernel_major_minor);

flag = 0;
if (rpm_exists(release:"EL5", rpm:"kernel-2.6.18") && rpm_check(release:"EL5", reference:"kernel-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-PAE-2.6.18") && rpm_check(release:"EL5", cpu:"i386", reference:"kernel-PAE-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-PAE-devel-2.6.18") && rpm_check(release:"EL5", cpu:"i386", reference:"kernel-PAE-devel-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-debug-2.6.18") && rpm_check(release:"EL5", reference:"kernel-debug-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-debug-devel-2.6.18") && rpm_check(release:"EL5", reference:"kernel-debug-devel-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-devel-2.6.18") && rpm_check(release:"EL5", reference:"kernel-devel-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-doc-2.6.18") && rpm_check(release:"EL5", reference:"kernel-doc-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-headers-2.6.18") && rpm_check(release:"EL5", reference:"kernel-headers-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-xen-2.6.18") && rpm_check(release:"EL5", reference:"kernel-xen-2.6.18-371.8.1.el5")) flag++;
if (rpm_exists(release:"EL5", rpm:"kernel-xen-devel-2.6.18") && rpm_check(release:"EL5", reference:"kernel-xen-devel-2.6.18-371.8.1.el5")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "affected kernel");
}
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2014-0433.NASL
    descriptionUpdated kernel packages that fix two security issues, three 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 Moderate 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. * A flaw was found in the way the Linux kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id73712
    published2014-04-27
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/73712
    titleCentOS 5 : kernel (CESA-2014:0433)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2014:0433 and 
# CentOS Errata and Security Advisory 2014:0433 respectively.
#

include("compat.inc");

if (description)
{
  script_id(73712);
  script_version("1.5");
  script_cvs_date("Date: 2020/01/06");

  script_cve_id("CVE-2012-6638", "CVE-2013-2888");
  script_bugtraq_id(62043, 65654);
  script_xref(name:"RHSA", value:"2014:0433");

  script_name(english:"CentOS 5 : kernel (CESA-2014:0433)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated kernel packages that fix two security issues, three 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
Moderate 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.

* A flaw was found in the way the Linux kernel's TCP/IP protocol suite
implementation handled TCP packets with both the SYN and FIN flags
set. A remote attacker could use this flaw to consume an excessive
amount of resources on the target system, potentially resulting in a
denial of service. (CVE-2012-6638, Moderate)

* A flaw was found in the way the Linux kernel handled HID (Human
Interface Device) reports with an out-of-bounds Report ID. An attacker
with physical access to the system could use this flaw to crash the
system or, potentially, escalate their privileges on the system.
(CVE-2013-2888, Moderate)

This update also fixes the following bugs :

* A previous change to the sunrpc code introduced a race condition
between the rpc_wake_up_task() and rpc_wake_up_status() functions. A
race between threads operating on these functions could result in a
deadlock situation, subsequently triggering a 'soft lockup' event and
rendering the system unresponsive. This problem has been fixed by
re-ordering tasks in the RPC wait queue. (BZ#1073731)

* Running a process in the background on a GFS2 file system could
sometimes trigger a glock recursion error that resulted in a kernel
panic. This happened when a readpage operation attempted to take a
glock that had already been held by another function. To prevent this
error, GFS2 now verifies whether the glock is already held when
performing the readpage operation. (BZ#1073953)

* A previous patch backport to the IUCV (Inter User Communication
Vehicle) code was incomplete. Consequently, when establishing an IUCV
connection, the kernel could, under certain circumstances, dereference
a NULL pointer, resulting in a kernel panic. A patch has been applied
to correct this problem by calling the proper function when removing
IUCV paths. (BZ#1077045)

In addition, this update adds the following enhancement :

* The lpfc driver had a fixed timeout of 60 seconds for SCSI task
management commands. With this update, the lpfc driver enables the
user to set this timeout within the range from 5 to 180 seconds. The
timeout can be changed by modifying the 'lpfc_task_mgmt_tmo' parameter
for the lpfc driver. (BZ#1073123)

All kernel users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues and add this
enhancement. The system must be rebooted for this update to take
effect."
  );
  # https://lists.centos.org/pipermail/centos-announce/2014-April/020268.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?21d13257"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected kernel packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2012-6638");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-PAE");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-PAE-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-debug-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-xen");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:kernel-xen-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/09/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/04/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/27");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 5.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-5", reference:"kernel-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"i386", reference:"kernel-PAE-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", cpu:"i386", reference:"kernel-PAE-devel-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-debug-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-debug-devel-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-devel-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-doc-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-headers-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-xen-2.6.18-371.8.1.el5")) flag++;
if (rpm_check(release:"CentOS-5", reference:"kernel-xen-devel-2.6.18-371.8.1.el5")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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-devel / kernel-debug / etc");
}
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20140424_KERNEL_ON_SL5_X.NASL
    description - A flaw was found in the way the Linux kernel
    last seen2020-03-18
    modified2014-04-25
    plugin id73706
    published2014-04-25
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/73706
    titleScientific Linux Security Update : kernel on SL5.x i386/x86_64 (20140424)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2014-0433-1.NASL
    descriptionFrom Red Hat Security Advisory 2014:0433 : Updated kernel packages that fix two security issues, three 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 Moderate 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. * A flaw was found in the way the Linux kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id73720
    published2014-04-27
    reporterThis script is Copyright (C) 2014-2015 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/73720
    titleOracle Linux 5 : kernel (ELSA-2014-0433-1)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2014-0772.NASL
    descriptionUpdated kernel packages that fix three security issues and two bugs are now available for Red Hat Enterprise Linux 5.9 Extended Update Support. 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. * A flaw was found in the way the Linux kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id79031
    published2014-11-08
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79031
    titleRHEL 5 : kernel (RHSA-2014:0772)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2014-0433.NASL
    descriptionUpdated kernel packages that fix two security issues, three 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 Moderate 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. * A flaw was found in the way the Linux kernel
    last seen2020-06-01
    modified2020-06-02
    plugin id73705
    published2014-04-25
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/73705
    titleRHEL 5 : kernel (RHSA-2014:0433)

Redhat

rpms
  • kernel-0:2.6.18-371.8.1.el5
  • kernel-PAE-0:2.6.18-371.8.1.el5
  • kernel-PAE-debuginfo-0:2.6.18-371.8.1.el5
  • kernel-PAE-devel-0:2.6.18-371.8.1.el5
  • kernel-debug-0:2.6.18-371.8.1.el5
  • kernel-debug-debuginfo-0:2.6.18-371.8.1.el5
  • kernel-debug-devel-0:2.6.18-371.8.1.el5
  • kernel-debuginfo-0:2.6.18-371.8.1.el5
  • kernel-debuginfo-common-0:2.6.18-371.8.1.el5
  • kernel-devel-0:2.6.18-371.8.1.el5
  • kernel-doc-0:2.6.18-371.8.1.el5
  • kernel-headers-0:2.6.18-371.8.1.el5
  • kernel-kdump-0:2.6.18-371.8.1.el5
  • kernel-kdump-debuginfo-0:2.6.18-371.8.1.el5
  • kernel-kdump-devel-0:2.6.18-371.8.1.el5
  • kernel-xen-0:2.6.18-371.8.1.el5
  • kernel-xen-debuginfo-0:2.6.18-371.8.1.el5
  • kernel-xen-devel-0:2.6.18-371.8.1.el5
  • kernel-0:2.6.18-348.27.1.el5
  • kernel-PAE-0:2.6.18-348.27.1.el5
  • kernel-PAE-debuginfo-0:2.6.18-348.27.1.el5
  • kernel-PAE-devel-0:2.6.18-348.27.1.el5
  • kernel-debug-0:2.6.18-348.27.1.el5
  • kernel-debug-debuginfo-0:2.6.18-348.27.1.el5
  • kernel-debug-devel-0:2.6.18-348.27.1.el5
  • kernel-debuginfo-0:2.6.18-348.27.1.el5
  • kernel-debuginfo-common-0:2.6.18-348.27.1.el5
  • kernel-devel-0:2.6.18-348.27.1.el5
  • kernel-doc-0:2.6.18-348.27.1.el5
  • kernel-headers-0:2.6.18-348.27.1.el5
  • kernel-kdump-0:2.6.18-348.27.1.el5
  • kernel-kdump-debuginfo-0:2.6.18-348.27.1.el5
  • kernel-kdump-devel-0:2.6.18-348.27.1.el5
  • kernel-xen-0:2.6.18-348.27.1.el5
  • kernel-xen-debuginfo-0:2.6.18-348.27.1.el5
  • kernel-xen-devel-0:2.6.18-348.27.1.el5

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 65654 CVE(CAN) ID: CVE-2012-6638 Linux Kernel是Linux操作系统的内核。 Linux kernel 3.2.24之前版本net/ipv4/tcp_input.c内的tcp_rcv_state_process函数在处理大量的SYN+FIN TCP数据包时，存在越界访问错误，远程攻击者可利用此漏洞造成拒绝服务。 0 Linux kernel &lt; 3.2.24 厂商补丁： Linux ----- 目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： http://www.kernel.org/ http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.24 https://github.com/torvalds/linux/commit/fdf5af0daf8019cec2396cdef8fb042d80fe71fa http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fdf5af0daf8019cec2396cdef8fb042d80fe71fa
idSSV:61509
last seen2017-11-19
modified2014-02-21
published2014-02-21
reporterRoot
titleLinux Kernel 'tcp_rcv_state_process()'函数拒绝服务漏洞

References