6.9 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
10.0%
Sebastian Krahmer discovered that GDM (GNOME Display Manager) did not properly drop privileges when handling the cache directories used to store users’ dmrc and face icon files. This could allow a local attacker to change the ownership of arbitrary files, thereby gaining root privileges.
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.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1099-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#
include("compat.inc");
if (description)
{
script_id(53238);
script_version("1.10");
script_cvs_date("Date: 2019/09/19 12:54:26");
script_cve_id("CVE-2011-0727");
script_bugtraq_id(47063);
script_xref(name:"USN", value:"1099-1");
script_name(english:"Ubuntu 9.10 / 10.04 LTS / 10.10 : gdm vulnerability (USN-1099-1)");
script_summary(english:"Checks dpkg output for updated package.");
script_set_attribute(
attribute:"synopsis",
value:"The remote Ubuntu host is missing a security-related patch."
);
script_set_attribute(
attribute:"description",
value:
"Sebastian Krahmer discovered that GDM (GNOME Display Manager) did not
properly drop privileges when handling the cache directories used to
store users' dmrc and face icon files. This could allow a local
attacker to change the ownership of arbitrary files, thereby gaining
root privileges.
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/1099-1/"
);
script_set_attribute(attribute:"solution", value:"Update the affected gdm package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/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:canonical:ubuntu_linux:gdm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.10");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.10");
script_set_attribute(attribute:"vuln_publication_date", value:"2011/03/31");
script_set_attribute(attribute:"patch_publication_date", value:"2011/03/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/03/31");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Ubuntu Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("ubuntu.inc");
include("misc_func.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:"^(9\.10|10\.04|10\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 9.10 / 10.04 / 10.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
flag = 0;
if (ubuntu_check(osver:"9.10", pkgname:"gdm", pkgver:"2.28.1-0ubuntu2.3")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"gdm", pkgver:"2.30.2.is.2.30.0-0ubuntu5.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"gdm", pkgver:"2.30.5-0ubuntu4.1")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
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, "gdm");
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | gdm | p-cpe:/a:canonical:ubuntu_linux:gdm |
canonical | ubuntu_linux | 10.04 | cpe:/o:canonical:ubuntu_linux:10.04:-:lts |
canonical | ubuntu_linux | 10.10 | cpe:/o:canonical:ubuntu_linux:10.10 |
canonical | ubuntu_linux | 9.10 | cpe:/o:canonical:ubuntu_linux:9.10 |