The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2011-2025 advisory.
The Generic Receive Offload (GRO) implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux 5 and 2.6.32 on Red Hat Enterprise Linux 6, as used in Red Hat Enterprise Virtualization (RHEV) Hypervisor and other products, allows remote attackers to cause a denial of service via crafted VLAN packets that are processed by the napi_reuse_skb function, leading to (1) a memory leak or (2) memory corruption, a different vulnerability than CVE-2011-1478. (CVE-2011-1576)
Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, allows guest OS users to gain host OS privileges by using DMA to generate MSI interrupts by writing to the interrupt injection registers. (CVE-2011-1898)
Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel before 2.6.39.3, when Kernel SamePage Merging (KSM) is enabled, allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted application. (CVE-2011-2183)
The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.
(CVE-2011-2491)
The bluetooth subsystem in the Linux kernel before 3.0-rc4 does not properly initialize certain data structures, which allows local users to obtain potentially sensitive information from kernel memory via a crafted getsockopt system call, related to (1) the l2cap_sock_getsockopt_old function in net/bluetooth/l2cap_sock.c and (2) the rfcomm_sock_getsockopt_old function in net/bluetooth/rfcomm/sock.c.
(CVE-2011-2492)
fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by discovering the length of another user’s password. (CVE-2011-2495)
Integer underflow in the l2cap_config_req function in net/bluetooth/l2cap_core.c in the Linux kernel before 3.0 allows remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a small command-size value within the command header of a Logical Link Control and Adaptation Protocol (L2CAP) configuration request, leading to a buffer overflow.
(CVE-2011-2497)
Multiple buffer overflows in net/wireless/nl80211.c in the Linux kernel before 2.6.39.2 allow local users to gain privileges by leveraging the CAP_NET_ADMIN capability during scan operations with a long SSID value. (CVE-2011-2517)
Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.
(CVE-2011-2695)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2011-2025.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(68421);
script_version("1.19");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/09/08");
script_cve_id(
"CVE-2011-1576",
"CVE-2011-1898",
"CVE-2011-2183",
"CVE-2011-2491",
"CVE-2011-2492",
"CVE-2011-2495",
"CVE-2011-2497",
"CVE-2011-2517",
"CVE-2011-2695"
);
script_name(english:"Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2011-2025)");
script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in
the ELSA-2011-2025 advisory.
- The Generic Receive Offload (GRO) implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux 5
and 2.6.32 on Red Hat Enterprise Linux 6, as used in Red Hat Enterprise Virtualization (RHEV) Hypervisor
and other products, allows remote attackers to cause a denial of service via crafted VLAN packets that are
processed by the napi_reuse_skb function, leading to (1) a memory leak or (2) memory corruption, a
different vulnerability than CVE-2011-1478. (CVE-2011-1576)
- Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not
have interrupt remapping, allows guest OS users to gain host OS privileges by using DMA to generate MSI
interrupts by writing to the interrupt injection registers. (CVE-2011-1898)
- Race condition in the scan_get_next_rmap_item function in mm/ksm.c in the Linux kernel before 2.6.39.3,
when Kernel SamePage Merging (KSM) is enabled, allows local users to cause a denial of service (NULL
pointer dereference) or possibly have unspecified other impact via a crafted application. (CVE-2011-2183)
- The Network Lock Manager (NLM) protocol implementation in the NFS client functionality in the Linux kernel
before 3.0 allows local users to cause a denial of service (system hang) via a LOCK_UN flock system call.
(CVE-2011-2491)
- The bluetooth subsystem in the Linux kernel before 3.0-rc4 does not properly initialize certain data
structures, which allows local users to obtain potentially sensitive information from kernel memory via a
crafted getsockopt system call, related to (1) the l2cap_sock_getsockopt_old function in
net/bluetooth/l2cap_sock.c and (2) the rfcomm_sock_getsockopt_old function in net/bluetooth/rfcomm/sock.c.
(CVE-2011-2492)
- fs/proc/base.c in the Linux kernel before 2.6.39.4 does not properly restrict access to /proc/#####/io
files, which allows local users to obtain sensitive I/O statistics by polling a file, as demonstrated by
discovering the length of another user's password. (CVE-2011-2495)
- Integer underflow in the l2cap_config_req function in net/bluetooth/l2cap_core.c in the Linux kernel
before 3.0 allows remote attackers to cause a denial of service (heap memory corruption) or possibly have
unspecified other impact via a small command-size value within the command header of a Logical Link
Control and Adaptation Protocol (L2CAP) configuration request, leading to a buffer overflow.
(CVE-2011-2497)
- Multiple buffer overflows in net/wireless/nl80211.c in the Linux kernel before 2.6.39.2 allow local users
to gain privileges by leveraging the CAP_NET_ADMIN capability during scan operations with a long SSID
value. (CVE-2011-2517)
- Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to
cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a
write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.
(CVE-2011-2695)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2011-2025.html");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2011-2497");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2011/06/02");
script_set_attribute(attribute:"patch_publication_date", value:"2011/08/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");
script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-debug-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-firmware");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:kernel-uek-headers");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-200.19.1.el5uek");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-200.19.1.el5uekdebug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-200.19.1.el6uek");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:ofa-2.6.32-200.19.1.el6uekdebug");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Oracle Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("linux_alt_patch_detect.nasl", "ssh_get_info.nasl");
script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");
exit(0);
}
include('audit.inc');
include('global_settings.inc');
include('ksplice.inc');
include('rpm.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');
var 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');
var 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');
var os_ver = os_ver[1];
if (! preg(pattern:"^(5|6)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 5 / 6', 'Oracle Linux ' + os_ver);
if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);
var machine_uptrack_level = get_one_kb_item('Host/uptrack-uname-r');
if (machine_uptrack_level)
{
var trimmed_uptrack_level = ereg_replace(string:machine_uptrack_level, pattern:"\.(x86_64|i[3-6]86|aarch64)$", replace:'');
var fixed_uptrack_levels = ['2.6.32-200.19.1.el5uek', '2.6.32-200.19.1.el6uek'];
foreach var fixed_uptrack_level ( fixed_uptrack_levels ) {
if (rpm_spec_vers_cmp(a:trimmed_uptrack_level, b:fixed_uptrack_level) >= 0)
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for ELSA-2011-2025');
}
}
__rpm_report = 'Running KSplice level of ' + trimmed_uptrack_level + ' does not meet the minimum fixed level of ' + join(fixed_uptrack_levels, sep:' / ') + ' for this advisory.\n\n';
}
var 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.');
var 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);
var pkgs = [
{'reference':'kernel-uek-2.6.32-200.19.1.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
{'reference':'kernel-uek-2.6.32-200.19.1.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
{'reference':'kernel-uek-debug-2.6.32-200.19.1.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
{'reference':'kernel-uek-debug-2.6.32-200.19.1.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
{'reference':'kernel-uek-debug-devel-2.6.32-200.19.1.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
{'reference':'kernel-uek-debug-devel-2.6.32-200.19.1.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
{'reference':'kernel-uek-devel-2.6.32-200.19.1.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
{'reference':'kernel-uek-devel-2.6.32-200.19.1.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
{'reference':'kernel-uek-doc-2.6.32-200.19.1.el5uek', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-doc-2.6.32'},
{'reference':'kernel-uek-firmware-2.6.32-200.19.1.el5uek', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-firmware-2.6.32'},
{'reference':'kernel-uek-headers-2.6.32-200.19.1.el5uek', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-headers-2.6.32'},
{'reference':'kernel-uek-headers-2.6.32-200.19.1.el5uek', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-headers-2.6.32'},
{'reference':'ofa-2.6.32-200.19.1.el5uek-1.5.1-4.0.28', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ofa-2.6.32-200.19.1.el5uek-1.5.1-4.0.28', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ofa-2.6.32-200.19.1.el5uekdebug-1.5.1-4.0.28', 'cpu':'i686', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ofa-2.6.32-200.19.1.el5uekdebug-1.5.1-4.0.28', 'cpu':'x86_64', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
{'reference':'kernel-uek-2.6.32-200.19.1.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
{'reference':'kernel-uek-2.6.32-200.19.1.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-2.6.32'},
{'reference':'kernel-uek-debug-2.6.32-200.19.1.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
{'reference':'kernel-uek-debug-2.6.32-200.19.1.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-2.6.32'},
{'reference':'kernel-uek-debug-devel-2.6.32-200.19.1.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
{'reference':'kernel-uek-debug-devel-2.6.32-200.19.1.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-debug-devel-2.6.32'},
{'reference':'kernel-uek-devel-2.6.32-200.19.1.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
{'reference':'kernel-uek-devel-2.6.32-200.19.1.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-devel-2.6.32'},
{'reference':'kernel-uek-doc-2.6.32-200.19.1.el6uek', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-doc-2.6.32'},
{'reference':'kernel-uek-firmware-2.6.32-200.19.1.el6uek', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-firmware-2.6.32'},
{'reference':'kernel-uek-headers-2.6.32-200.19.1.el6uek', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-headers-2.6.32'},
{'reference':'kernel-uek-headers-2.6.32-200.19.1.el6uek', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'kernel-uek-headers-2.6.32'},
{'reference':'ofa-2.6.32-200.19.1.el6uek-1.5.1-4.0.47', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ofa-2.6.32-200.19.1.el6uek-1.5.1-4.0.47', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ofa-2.6.32-200.19.1.el6uekdebug-1.5.1-4.0.47', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
{'reference':'ofa-2.6.32-200.19.1.el6uekdebug-1.5.1-4.0.47', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var release = NULL;
var sp = NULL;
var cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) release = 'EL' + package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && release) {
if (exists_check) {
if (rpm_exists(release:release, rpm:exists_check) && rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
} else {
if (rpm_check(release:release, sp:sp, cpu:cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'kernel-uek / kernel-uek-debug / kernel-uek-debug-devel / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
oracle | linux | 5 | cpe:/o:oracle:linux:5 |
oracle | linux | 6 | cpe:/o:oracle:linux:6 |
oracle | linux | kernel-uek | p-cpe:/a:oracle:linux:kernel-uek |
oracle | linux | kernel-uek-debug | p-cpe:/a:oracle:linux:kernel-uek-debug |
oracle | linux | kernel-uek-debug-devel | p-cpe:/a:oracle:linux:kernel-uek-debug-devel |
oracle | linux | kernel-uek-devel | p-cpe:/a:oracle:linux:kernel-uek-devel |
oracle | linux | kernel-uek-doc | p-cpe:/a:oracle:linux:kernel-uek-doc |
oracle | linux | kernel-uek-firmware | p-cpe:/a:oracle:linux:kernel-uek-firmware |
oracle | linux | kernel-uek-headers | p-cpe:/a:oracle:linux:kernel-uek-headers |
oracle | linux | ofa-2.6.32-200.19.1.el5uek | p-cpe:/a:oracle:linux:ofa-2.6.32-200.19.1.el5uek |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1576
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1898
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2183
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2491
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2492
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2495
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2497
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2517
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2695
linux.oracle.com/errata/ELSA-2011-2025.html