CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
EPSS
Percentile
5.1%
The remote host is affected by the vulnerability described in GLSA-200409-08 (Ruby: CGI::Session creates files insecurely)
The CGI::Session::FileStore implementation (and presumably CGI::Session::PStore), which allow data associated with a particular Session instance to be written to a file, writes to a file in /tmp with no regard for secure permissions. As a result, the file is left with whatever the default umask permissions are, which commonly would allow other local users to read the data from that session file.
Impact :
Depending on the default umask, any data stored using these methods could be read by other users on the system.
Workaround :
By changing the default umask on the system to not permit read access to other users (e.g. 0700), one can prevent these files from being readable by other users.
#%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 200409-08.
#
# 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(14662);
script_version("1.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2004-0755");
script_xref(name:"GLSA", value:"200409-08");
script_name(english:"GLSA-200409-08 : Ruby: CGI::Session creates files insecurely");
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-200409-08
(Ruby: CGI::Session creates files insecurely)
The CGI::Session::FileStore implementation (and presumably
CGI::Session::PStore), which allow data associated with a particular
Session instance to be written to a file, writes to a file in /tmp with no
regard for secure permissions. As a result, the file is left with whatever
the default umask permissions are, which commonly would allow other local
users to read the data from that session file.
Impact :
Depending on the default umask, any data stored using these methods could
be read by other users on the system.
Workaround :
By changing the default umask on the system to not permit read access to
other users (e.g. 0700), one can prevent these files from being readable by
other users."
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/200409-08"
);
script_set_attribute(
attribute:"solution",
value:
"All Ruby users should upgrade to the latest version:
# emerge sync
# emerge -pv '>=dev-lang/ruby-your_version'
# emerge '>=dev-lang/ruby-your_version'"
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:ruby");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2004/09/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/04");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2004-2021 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:"dev-lang/ruby", unaffected:make_list("rge 1.6.8-r11", "rge 1.8.0-r7", "ge 1.8.2_pre2"), vulnerable:make_list("lt 1.8.2_pre2"))) flag++;
if (flag)
{
if (report_verbosity > 0) security_note(port:0, extra:qpkg_report_get());
else security_note(0);
exit(0);
}
else
{
tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Ruby: CGI:");
}