CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
50.4%
halfdog discovered that OverlayFS, when mounting on top of a FUSE mount, incorrectly propagated file attributes, including setuid. A local unprivileged attacker could use this to gain privileges.
(CVE-2016-1576)
halfdog discovered that OverlayFS in the Linux kernel incorrectly propagated security sensitive extended attributes, such as POSIX ACLs.
A local unprivileged attacker could use this to gain privileges.
(CVE-2016-1575)
It was discovered that the Linux kernel keyring subsystem contained a race between read and revoke operations. A local attacker could use this to cause a denial of service (system crash). (CVE-2015-7550)
Guoyong Gang discovered that the Linux kernel networking implementation did not validate protocol identifiers for certain protocol families, A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges.
(CVE-2015-8543)
Dmitry Vyukov discovered that the pptp implementation in the Linux kernel did not verify an address length when setting up a socket. A local attacker could use this to craft an application that exposed sensitive information from kernel memory. (CVE-2015-8569)
David Miller discovered that the Bluetooth implementation in the Linux kernel did not properly validate the socket address length for Synchronous Connection-Oriented (SCO) sockets. A local attacker could use this to expose sensitive information. (CVE-2015-8575)
It was discovered that the Linux kernel’s Filesystem in Userspace (FUSE) implementation did not handle initial zero length segments properly. A local attacker could use this to cause a denial of service (unkillable task). (CVE-2015-8785).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2907-2. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(88896);
script_version("2.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/17");
script_cve_id("CVE-2015-7550", "CVE-2015-8543", "CVE-2015-8569", "CVE-2015-8575", "CVE-2015-8785", "CVE-2016-1575", "CVE-2016-1576");
script_xref(name:"USN", value:"2907-2");
script_name(english:"Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2907-2)");
script_summary(english:"Checks dpkg output for updated packages.");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Ubuntu host is missing one or more security-related
patches."
);
script_set_attribute(
attribute:"description",
value:
"halfdog discovered that OverlayFS, when mounting on top of a FUSE
mount, incorrectly propagated file attributes, including setuid. A
local unprivileged attacker could use this to gain privileges.
(CVE-2016-1576)
halfdog discovered that OverlayFS in the Linux kernel incorrectly
propagated security sensitive extended attributes, such as POSIX ACLs.
A local unprivileged attacker could use this to gain privileges.
(CVE-2016-1575)
It was discovered that the Linux kernel keyring subsystem contained a
race between read and revoke operations. A local attacker could use
this to cause a denial of service (system crash). (CVE-2015-7550)
Guoyong Gang discovered that the Linux kernel networking
implementation did not validate protocol identifiers for certain
protocol families, A local attacker could use this to cause a denial
of service (system crash) or possibly gain administrative privileges.
(CVE-2015-8543)
Dmitry Vyukov discovered that the pptp implementation in the Linux
kernel did not verify an address length when setting up a socket. A
local attacker could use this to craft an application that exposed
sensitive information from kernel memory. (CVE-2015-8569)
David Miller discovered that the Bluetooth implementation in the Linux
kernel did not properly validate the socket address length for
Synchronous Connection-Oriented (SCO) sockets. A local attacker could
use this to expose sensitive information. (CVE-2015-8575)
It was discovered that the Linux kernel's Filesystem in Userspace
(FUSE) implementation did not handle initial zero length segments
properly. A local attacker could use this to cause a denial of service
(unkillable task). (CVE-2015-8785).
Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
);
script_set_attribute(
attribute:"see_also",
value:"https://usn.ubuntu.com/2907-2/"
);
script_set_attribute(
attribute:"solution",
value:
"Update the affected linux-image-3.13-generic and / or
linux-image-3.13-generic-lpae packages."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13-generic");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13-generic-lpae");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
script_set_attribute(attribute:"vuln_publication_date", value:"2015/12/28");
script_set_attribute(attribute:"patch_publication_date", value:"2016/02/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/23");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"Ubuntu Security Notice (C) 2016-2020 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Ubuntu Local Security Checks");
script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("ubuntu.inc");
include("ksplice.inc");
if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(12\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
rm_kb_item(name:"Host/uptrack-uname-r");
cve_list = make_list("CVE-2015-7550", "CVE-2015-8543", "CVE-2015-8569", "CVE-2015-8575", "CVE-2015-8785", "CVE-2016-1575", "CVE-2016-1576");
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-2907-2");
}
else
{
_ubuntu_report = ksplice_reporting_text();
}
}
flag = 0;
if (ubuntu_check(osver:"12.04", pkgname:"linux-image-3.13.0-79-generic", pkgver:"3.13.0-79.123~precise1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"linux-image-3.13.0-79-generic-lpae", pkgver:"3.13.0-79.123~precise1")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-3.13-generic / linux-image-3.13-generic-lpae");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7550
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8543
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8569
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8575
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8785
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1575
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1576
usn.ubuntu.com/2907-2/
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
50.4%