CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:P/A:P
EPSS
Percentile
5.1%
Bastian Blank discovered that libvirtd, a daemon for management of virtual machines, network and storage, would change ownership of devices files so they would be owned by user ‘libvirt-qemu’ and group ‘kvm’, which is a general purpose group not specific to libvirt, allowing unintended write access to those devices and files for the kvm group members.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-2650. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(65586);
script_version("1.10");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2013-1766");
script_bugtraq_id(58178);
script_xref(name:"DSA", value:"2650");
script_name(english:"Debian DSA-2650-2 : libvirt - files and device nodes ownership change to kvm group");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Bastian Blank discovered that libvirtd, a daemon for management of
virtual machines, network and storage, would change ownership of
devices files so they would be owned by user 'libvirt-qemu' and group
'kvm', which is a general purpose group not specific to libvirt,
allowing unintended write access to those devices and files for the
kvm group members."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=701649"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/squeeze/libvirt"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2013/dsa-2650"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the libvirt packages.
For the stable distribution (squeeze), this problem has been fixed in
version 0.8.3-5+squeeze5."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/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:debian:debian_linux:libvirt");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
script_set_attribute(attribute:"patch_publication_date", value:"2013/03/17");
script_set_attribute(attribute:"plugin_publication_date", value:"2013/03/17");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Debian Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"6.0", prefix:"libvirt-bin", reference:"0.8.3-5+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"libvirt-dev", reference:"0.8.3-5+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"libvirt-doc", reference:"0.8.3-5+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"libvirt0", reference:"0.8.3-5+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"libvirt0-dbg", reference:"0.8.3-5+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"python-libvirt", reference:"0.8.3-5+squeeze5")) flag++;
if (flag)
{
if (report_verbosity > 0) security_note(port:0, extra:deb_report_get());
else security_note(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");