CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS
Percentile
66.0%
It was discovered that OpenLDAP, a free implementation of the Lightweight Directory Access Protocol, when OpenSSL is used, does not properly handle a β\0β character in a domain name in the subjectβs Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.
#%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-1943. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(44808);
script_version("1.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2009-3767");
script_xref(name:"DSA", value:"1943");
script_name(english:"Debian DSA-1943-1 : openldap openldap2.3 - insufficient input validation");
script_summary(english:"Checks dpkg output for the updated packages");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"It was discovered that OpenLDAP, a free implementation of the
Lightweight Directory Access Protocol, when OpenSSL is used, does not
properly handle a '\0' character in a domain name in the subject's
Common Name (CN) field of an X.509 certificate, which allows
man-in-the-middle attackers to spoof arbitrary SSL servers via a
crafted certificate issued by a legitimate Certification Authority."
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=553432"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2009/dsa-1943"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the openldap2.3/openldap packages.
For the oldstable distribution (etch), this problem has been fixed in
version 2.3.30-5+etch3 for openldap2.3.
For the stable distribution (lenny), this problem has been fixed in
version 2.4.11-1+lenny1 for openldap."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_cwe_id(310);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openldap");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openldap2.3");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:5.0");
script_set_attribute(attribute:"patch_publication_date", value:"2009/12/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2010/02/24");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2010-2021 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:"4.0", prefix:"ldap-utils", reference:"2.3.30-5+etch3")) flag++;
if (deb_check(release:"4.0", prefix:"libldap-2.3-0", reference:"2.3.30-5+etch3")) flag++;
if (deb_check(release:"4.0", prefix:"slapd", reference:"2.3.30-5+etch3")) flag++;
if (deb_check(release:"5.0", prefix:"ldap-utils", reference:"2.4.11-1+lenny1")) flag++;
if (deb_check(release:"5.0", prefix:"libldap-2.4-2", reference:"2.4.11-1+lenny1")) flag++;
if (deb_check(release:"5.0", prefix:"libldap-2.4-2-dbg", reference:"2.4.11-1+lenny1")) flag++;
if (deb_check(release:"5.0", prefix:"libldap2-dev", reference:"2.4.11-1+lenny1")) flag++;
if (deb_check(release:"5.0", prefix:"slapd", reference:"2.4.11-1+lenny1")) flag++;
if (deb_check(release:"5.0", prefix:"slapd-dbg", reference:"2.4.11-1+lenny1")) 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");