The remote ESXi host is affected by multiple denial of service vulnerabilities in the glibc library :
A buffer overflow condition exists in the extend_buffers() function in file posix/regexec.c due to improper validation of user-supplied input when handling multibyte characters in a regular expression. An unauthenticated, remote attacker can exploit this, via a crafted regular expression, to corrupt the memory, resulting in a denial of service. (CVE-2013-0242)
A stack-based buffer overflow condition exists in the getaddrinfo() function in file posix/getaddrinfo.c due to improper validation of user-supplied input during the handling of domain conversion results. An unauthenticated, remote attacker can exploit this to cause a denial of service by using a crafted host name or IP address that triggers a large number of domain conversion results. (CVE-2013-1914)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(87679);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id(
"CVE-2013-0242",
"CVE-2013-1914"
);
script_bugtraq_id(
57638,
58839
);
script_xref(name:"VMSA", value:"2014-0008");
script_name(english:"VMware ESXi Multiple DoS (VMSA-2014-0008)");
script_summary(english:"Checks the version and build numbers of the remote host.");
script_set_attribute(attribute:"synopsis", value:
"The remote VMware ESXi host is missing a security-related patch.");
script_set_attribute(attribute:"description", value:
"The remote ESXi host is affected by multiple denial of service
vulnerabilities in the glibc library :
- A buffer overflow condition exists in the
extend_buffers() function in file posix/regexec.c due to
improper validation of user-supplied input when handling
multibyte characters in a regular expression. An
unauthenticated, remote attacker can exploit this, via
a crafted regular expression, to corrupt the memory,
resulting in a denial of service. (CVE-2013-0242)
- A stack-based buffer overflow condition exists in the
getaddrinfo() function in file posix/getaddrinfo.c due
to improper validation of user-supplied input during the
handling of domain conversion results. An
unauthenticated, remote attacker can exploit this to
cause a denial of service by using a crafted host name
or IP address that triggers a large number of domain
conversion results. (CVE-2013-1914)");
script_set_attribute(attribute:"see_also", value:"https://www.vmware.com/security/advisories/VMSA-2014-0008");
script_set_attribute(attribute:"see_also", value:"http://lists.vmware.com/pipermail/security-announce/2014/000282.html");
script_set_attribute(attribute:"solution", value:
"Apply the appropriate patch according to the vendor advisory that
pertains to ESXi version 5.0 / 5.1 / 5.5.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2013/01/29");
script_set_attribute(attribute:"patch_publication_date", value:"2014/12/04");
script_set_attribute(attribute:"plugin_publication_date", value:"2015/12/30");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:5.0");
script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:5.1");
script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:esxi:5.5");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2015-2021 Tenable Network Security, Inc.");
script_dependencies("vmware_vsphere_detect.nbin");
script_require_keys("Host/VMware/version", "Host/VMware/release");
script_require_ports("Host/VMware/vsphere");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
ver = get_kb_item_or_exit("Host/VMware/version");
rel = get_kb_item_or_exit("Host/VMware/release");
port = get_kb_item_or_exit("Host/VMware/vsphere");
pci = FALSE;
pci = get_kb_item("Settings/PCI_DSS");
if ("ESXi" >!< rel)
audit(AUDIT_OS_NOT, "VMware ESXi");
esx = "ESXi";
extract = eregmatch(pattern:"^ESXi (\d\.\d).*$", string:ver);
if (isnull(extract))
audit(AUDIT_UNKNOWN_APP_VER, "VMware ESXi");
else
ver = extract[1];
fixes = make_array(
"5.0", "See vendor",
"5.1", "2323236",
"5.5", "2068190"
);
fix = FALSE;
fix = fixes[ver];
# get the build before checking the fix for the most complete audit trail
extract = eregmatch(pattern:'^VMware ESXi.* build-([0-9]+)$', string:rel);
if (isnull(extract))
audit(AUDIT_UNKNOWN_BUILD, "VMware ESXi", ver);
build = int(extract[1]);
# if there is no fix in the array, fix is FALSE
if(!fix)
audit(AUDIT_INST_VER_NOT_VULN, "VMware ESXi", ver, build);
if (!pci && fix == "See vendor")
audit(AUDIT_PCI);
vuln = FALSE;
# This is for PCI reporting
if (pci && fix == "See vendor")
vuln = TRUE;
else if (build < fix )
vuln = TRUE;
if (vuln)
{
if (report_verbosity > 0)
{
report = '\n Version : ESXi ' + ver +
'\n Installed build : ' + build +
'\n Fixed build : ' + fix +
'\n';
security_warning(port:port, extra:report);
}
else
security_warning(port:port);
exit(0);
}
else
audit(AUDIT_INST_VER_NOT_VULN, "VMware ESXi", ver, build);