Disclosure - http://www.openwall.com/lists/oss-security/2014/09/24/10
Behaviour prior to patch :
$ env x=‘() { :;}; echo OOPS’ bash -c /usr/sbin/nologin OOPS This account is currently not available.
Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory 2014-11360.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(77874);
script_version("1.24");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");
script_cve_id("CVE-2014-6271");
script_bugtraq_id(70103);
script_xref(name:"FEDORA", value:"2014-11360");
script_xref(name:"IAVA", value:"2014-A-0142");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/07/28");
script_xref(name:"CEA-ID", value:"CEA-2019-0240");
script_name(english:"Fedora 20 : bash-4.2.47-4.fc20 (2014-11360)");
script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing a security update.");
script_set_attribute(attribute:"description", value:
"Disclosure - http://www.openwall.com/lists/oss-security/2014/09/24/10
Behaviour prior to patch :
$ env x='() { :;}; echo OOPS' bash -c /usr/sbin/nologin OOPS This
account is currently not available.
Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
script_set_attribute(attribute:"see_also", value:"https://www.openwall.com/lists/oss-security/2014/09/24/10");
# https://lists.fedoraproject.org/pipermail/package-announce/2014-September/138583.html
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3beab4d1");
script_set_attribute(attribute:"solution", value:
"Update the affected bash package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'Apache mod_cgi Bash Environment Variable Code Injection (Shellshock)');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"patch_publication_date", value:"2014/09/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/09/26");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:bash");
script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:20");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Fedora Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2014-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^20([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 20.x", "Fedora " + os_ver);
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
flag = 0;
if (rpm_check(release:"FC20", reference:"bash-4.2.47-4.fc20")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
else security_hole(0);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "bash");
}
Vendor | Product | Version | CPE |
---|---|---|---|
fedoraproject | fedora | bash | p-cpe:/a:fedoraproject:fedora:bash |
fedoraproject | fedora | 20 | cpe:/o:fedoraproject:fedora:20 |