CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
AI Score
Confidence
High
EPSS
Percentile
42.3%
It was reported that the BlueZ’s HID and HOGP profile implementations don’t specifically require bonding between the device and the host.
Malicious devices can take advantage of this flaw to connect to a target host and impersonate an existing HID device without security or to cause an SDP or GATT service discovery to take place which would allow HID reports to be injected to the input subsystem from a non-bonded source.
For the HID profile an new configuration option (ClassicBondedOnly) is introduced to make sure that input connections only come from bonded device connections. The options defaults to ‘false’ to maximize device compatibility.
Note that as a result of the significant changes between the previous version in Jessie (based on upstream release 5.23) and the available patches to address this vulnerability, it was decided that a backport of the bluez package from Debian 9 ‘Stretch’ was the only viable way to address the referenced vulnerability.
For Debian 8 ‘Jessie’, this problem has been fixed in version 5.43-2+deb9u2~deb8u1.
We recommend that you upgrade your bluez packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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 Debian Security Advisory DLA-2240-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(137282);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/07");
script_cve_id("CVE-2020-0556");
script_name(english:"Debian DLA-2240-1 : bluez security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
script_set_attribute(attribute:"description", value:
"It was reported that the BlueZ's HID and HOGP profile implementations
don't specifically require bonding between the device and the host.
Malicious devices can take advantage of this flaw to connect to a
target host and impersonate an existing HID device without security or
to cause an SDP or GATT service discovery to take place which would
allow HID reports to be injected to the input subsystem from a
non-bonded source.
For the HID profile an new configuration option (ClassicBondedOnly) is
introduced to make sure that input connections only come from bonded
device connections. The options defaults to 'false' to maximize device
compatibility.
Note that as a result of the significant changes between the previous
version in Jessie (based on upstream release 5.23) and the available
patches to address this vulnerability, it was decided that a backport
of the bluez package from Debian 9 'Stretch' was the only viable way
to address the referenced vulnerability.
For Debian 8 'Jessie', this problem has been fixed in version
5.43-2+deb9u2~deb8u1.
We recommend that you upgrade your bluez packages.
NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2020/06/msg00008.html");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/bluez");
script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-0556");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/12");
script_set_attribute(attribute:"patch_publication_date", value:"2020/06/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bluetooth");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bluez");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bluez-cups");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bluez-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bluez-hcidump");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bluez-obexd");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:bluez-test-scripts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbluetooth-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbluetooth3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbluetooth3-dbg");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
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:"bluetooth", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"bluez", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"bluez-cups", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"bluez-dbg", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"bluez-hcidump", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"bluez-obexd", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"bluez-test-scripts", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"libbluetooth-dev", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"libbluetooth3", reference:"5.43-2+deb9u2~deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"libbluetooth3-dbg", reference:"5.43-2+deb9u2~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");
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
AI Score
Confidence
High
EPSS
Percentile
42.3%