The remote host is affected by the vulnerability described in GLSA-200704-11 (Vixie Cron: Denial of Service)
During an internal audit, Raphael Marichez of the Gentoo Linux Security Team found that Vixie Cron has weak permissions set on Gentoo, allowing for a local user to create hard links to system and users cron files, while a st_nlink check in database.c will generate a superfluous error.
Impact :
Depending on the partitioning scheme and the 'cron' group membership, a malicious local user can create hard links to system or users cron files that will trigger the st_link safety check and prevent the targeted cron file from being run from the next restart or database reload.
Workaround :
There is no known workaround at this time.
#%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 200704-11.
#
# 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(25056);
script_version("1.14");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2007-1856");
script_xref(name:"GLSA", value:"200704-11");
script_name(english:"GLSA-200704-11 : Vixie Cron: Denial of Service");
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-200704-11
(Vixie Cron: Denial of Service)
During an internal audit, Raphael Marichez of the Gentoo Linux Security
Team found that Vixie Cron has weak permissions set on Gentoo, allowing
for a local user to create hard links to system and users cron files,
while a st_nlink check in database.c will generate a superfluous error.
Impact :
Depending on the partitioning scheme and the 'cron' group membership, a
malicious local user can create hard links to system or users cron
files that will trigger the st_link safety check and prevent the
targeted cron file from being run from the next restart or database
reload.
Workaround :
There is no known workaround at this time."
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/200704-11"
);
script_set_attribute(
attribute:"solution",
value:
"All Vixie Cron users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=sys-process/vixie-cron-4.1-r10'"
);
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:vixie-cron");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2007/04/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2007/04/19");
script_set_attribute(attribute:"vuln_publication_date", value:"2007/04/16");
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:"sys-process/vixie-cron", unaffected:make_list("ge 4.1-r10"), vulnerable:make_list("lt 4.1-r10"))) 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, "Vixie Cron");
}
Vendor | Product | Version | CPE |
---|---|---|---|
gentoo | linux | vixie-cron | p-cpe:/a:gentoo:linux:vixie-cron |
gentoo | linux | cpe:/o:gentoo:linux |