4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.008 Low
EPSS
Percentile
82.1%
Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server for Unix. The Common Vulnerabilities and Exposures project identifies the following issues :
CVE-2018-14629 Florian Stuelpner discovered that Samba is vulnerable to infinite query recursion caused by CNAME loops, resulting in denial of service.
CVE-2018-16841 Alex MacCuish discovered that a user with a valid certificate or smart card can crash the Samba AD DC’s KDC when configured to accept smart-card authentication.
CVE-2018-16851 Garming Sam of the Samba Team and Catalyst discovered a NULL pointer dereference vulnerability in the Samba AD DC LDAP server allowing a user able to read more than 256MB of LDAP entries to crash the Samba AD DC’s LDAP server.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4345. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include("compat.inc");
if (description)
{
script_id(119268);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/25");
script_cve_id("CVE-2018-14629", "CVE-2018-16841", "CVE-2018-16851");
script_xref(name:"DSA", value:"4345");
script_name(english:"Debian DSA-4345-1 : samba - 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 Samba, a SMB/CIFS
file, print, and login server for Unix. The Common Vulnerabilities and
Exposures project identifies the following issues :
- CVE-2018-14629
Florian Stuelpner discovered that Samba is vulnerable to
infinite query recursion caused by CNAME loops,
resulting in denial of service.
https://www.samba.org/samba/security/CVE-2018-14629.html
- CVE-2018-16841
Alex MacCuish discovered that a user with a valid
certificate or smart card can crash the Samba AD DC's
KDC when configured to accept smart-card authentication.
https://www.samba.org/samba/security/CVE-2018-16841.html
- CVE-2018-16851
Garming Sam of the Samba Team and Catalyst discovered a
NULL pointer dereference vulnerability in the Samba AD
DC LDAP server allowing a user able to read more than
256MB of LDAP entries to crash the Samba AD DC's LDAP
server.
https://www.samba.org/samba/security/CVE-2018-16851.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2018-14629"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.samba.org/samba/security/CVE-2018-14629.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2018-16841"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.samba.org/samba/security/CVE-2018-16841.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2018-16851"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.samba.org/samba/security/CVE-2018-16851.html"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/source-package/samba"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/stretch/samba"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2018/dsa-4345"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the samba packages.
For the stable distribution (stretch), these problems have been fixed
in version 2:4.5.12+dfsg-2+deb9u4."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:samba");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/28");
script_set_attribute(attribute:"patch_publication_date", value:"2018/11/27");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/29");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2020 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:"9.0", prefix:"ctdb", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libnss-winbind", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libpam-winbind", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libparse-pidl-perl", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libsmbclient", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libsmbclient-dev", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libwbclient-dev", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"libwbclient0", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"python-samba", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"registry-tools", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba-common", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba-common-bin", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba-dev", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba-dsdb-modules", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba-libs", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba-testsuite", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"samba-vfs-modules", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"smbclient", reference:"2:4.5.12+dfsg-2+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"winbind", reference:"2:4.5.12+dfsg-2+deb9u4")) 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");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | samba | p-cpe:/a:debian:debian_linux:samba |
debian | debian_linux | 9.0 | cpe:/o:debian:debian_linux:9.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14629
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16841
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16851
packages.debian.org/source/stretch/samba
security-tracker.debian.org/tracker/CVE-2018-14629
security-tracker.debian.org/tracker/CVE-2018-16841
security-tracker.debian.org/tracker/CVE-2018-16851
security-tracker.debian.org/tracker/source-package/samba
www.debian.org/security/2018/dsa-4345
www.samba.org/samba/security/CVE-2018-14629.html
www.samba.org/samba/security/CVE-2018-16841.html
www.samba.org/samba/security/CVE-2018-16851.html
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.008 Low
EPSS
Percentile
82.1%