CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:N/I:C/A:N
EPSS
Percentile
28.9%
Several vulnerabilities have been discovered in LXC, the Linux Containers userspace tools. The Common Vulnerabilities and Exposures project identifies the following problems :
CVE-2015-1331 Roman Fiedler discovered a directory traversal flaw in LXC when creating lock files. A local attacker could exploit this flaw to create an arbitrary file as the root user.
CVE-2015-1334 Roman Fiedler discovered that LXC incorrectly trusted the container’s proc filesystem to set up AppArmor profile changes and SELinux domain transitions. A malicious container could create a fake proc filesystem and use this flaw to run programs inside the container that are not confined by AppArmor or SELinux.
#%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-3317. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(84993);
script_version("2.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");
script_cve_id("CVE-2015-1331", "CVE-2015-1334");
script_xref(name:"DSA", value:"3317");
script_name(english:"Debian DSA-3317-1 : lxc - security update");
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:
"Several vulnerabilities have been discovered in LXC, the Linux
Containers userspace tools. The Common Vulnerabilities and Exposures
project identifies the following problems :
- CVE-2015-1331
Roman Fiedler discovered a directory traversal flaw in
LXC when creating lock files. A local attacker could
exploit this flaw to create an arbitrary file as the
root user.
- CVE-2015-1334
Roman Fiedler discovered that LXC incorrectly trusted
the container's proc filesystem to set up AppArmor
profile changes and SELinux domain transitions. A
malicious container could create a fake proc filesystem
and use this flaw to run programs inside the container
that are not confined by AppArmor or SELinux."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=793298"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2015-1331"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2015-1334"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/jessie/lxc"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2015/dsa-3317"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the lxc packages.
For the stable distribution (jessie), these problems have been fixed
in version 1:1.0.6-6+deb8u1."
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:C/A:N");
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:lxc");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
script_set_attribute(attribute:"patch_publication_date", value:"2015/07/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/07/27");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2015-2021 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:"8.0", prefix:"lxc", reference:"1:1.0.6-6+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"lxc-dbg", reference:"1:1.0.6-6+deb8u1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1331
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1334
bugs.debian.org/cgi-bin/bugreport.cgi?bug=793298
packages.debian.org/source/jessie/lxc
security-tracker.debian.org/tracker/CVE-2015-1331
security-tracker.debian.org/tracker/CVE-2015-1334
www.debian.org/security/2015/dsa-3317