CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS
Percentile
87.3%
The remote host is affected by the vulnerability described in GLSA-200710-25 (MLDonkey: Privilege escalation)
The Gentoo MLDonkey ebuild adds a user to the system named 'p2p' so that the MLDonkey service can run under a user with low privileges.
With older Portage versions this user is created with a valid login shell and no password.
Impact :
A remote attacker could log into a vulnerable system as the p2p user.
This would require an installed login service that permitted empty passwords, such as SSH configured with the 'PermitEmptyPasswords yes' option, a local login console, or a telnet server.
Workaround :
See Resolution.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200710-25.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(27557);
script_version("1.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2007-5714");
script_xref(name:"GLSA", value:"200710-25");
script_name(english:"GLSA-200710-25 : MLDonkey: Privilege escalation");
script_summary(english:"Checks for updated package(s) in /var/db/pkg");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Gentoo host is missing one or more security-related
patches."
);
script_set_attribute(
attribute:"description",
value:
"The remote host is affected by the vulnerability described in GLSA-200710-25
(MLDonkey: Privilege escalation)
The Gentoo MLDonkey ebuild adds a user to the system named 'p2p' so
that the MLDonkey service can run under a user with low privileges.
With older Portage versions this user is created with a valid login
shell and no password.
Impact :
A remote attacker could log into a vulnerable system as the p2p user.
This would require an installed login service that permitted empty
passwords, such as SSH configured with the 'PermitEmptyPasswords yes'
option, a local login console, or a telnet server.
Workaround :
See Resolution."
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/200710-25"
);
script_set_attribute(
attribute:"solution",
value:
"Change the p2p user's shell to disallow login. For example, as root run
the following command:
# usermod -s /bin/false p2p
NOTE: updating to the current MLDonkey ebuild will not remove this
vulnerability, it must be fixed manually. The updated ebuild is to
prevent this problem from occurring in the future."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_cwe_id(287);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:mldonkey");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2007/10/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2007/10/25");
script_set_attribute(attribute:"vuln_publication_date", value:"2007/08/18");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2007-2021 Tenable Network Security, Inc.");
script_family(english:"Gentoo Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (qpkg_check(package:"net-p2p/mldonkey", unaffected:make_list("ge 2.9.0-r3"), vulnerable:make_list("lt 2.9.0-r3"))) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "MLDonkey");
}