Vulnerabilities > CVE-2014-3261 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Cisco products

047910
CVSS 7.6 - HIGH
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
high complexity
cisco
CWE-119
nessus

Summary

Buffer overflow in the Smart Call Home implementation in Cisco NX-OS on Fabric Interconnects in Cisco Unified Computing System 1.4 before 1.4(1i), NX-OS 5.0 before 5.0(3)U2(2) on Nexus 3000 devices, NX-OS 4.1 before 4.1(2)E1(1l) on Nexus 4000 devices, NX-OS 5.x before 5.1(3)N1(1) on Nexus 5000 devices, NX-OS 5.2 before 5.2(3a) on Nexus 7000 devices, and CG-OS CG4 before CG4(2) on Connected 1000 Connected Grid Routers allows remote SMTP servers to execute arbitrary code via a crafted reply, aka Bug IDs CSCtk00695, CSCts56633, CSCts56632, CSCts56628, CSCug14405, and CSCuf61322.

Vulnerable Configurations

Part Description Count
Hardware
Cisco
24
OS
Cisco
51

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

NASL familyCISCO
NASL idCISCO-SA-20140521-NXOS.NASL
descriptionAccording to its self-reported version, the remote NX-OS device is reportedly affected by one or more of the following vulnerabilities : - A privilege escalation flaw exists on systems with multiple virtual device contexts (VDCs) and local authentication configured. This could allow a remote, authenticated attacker to gain the privileges of an administrator in another VDC. Affects Nexus 7000 series devices. (CVE-2013-1191) - A privilege escalation flaw exists on systems with multiple virtual device contexts (VDCs) and local authentication configured. This could allow a remote, authenticated attacker to gain the privileges of an administrator in another VDC. Affects Nexus 7000 series devices. (CVE-2014-2200). - A buffer overflow flaw exists with the Smart Call Home feature. A remote attacker, with control of a configured SMTP server, could execute arbitrary code with elevated privileges. (CVE-2014-3261) - A denial of service flaw exists with the Message Transfer Service (MTS) due to a NULL pointer dereference. This could allow a remote attacker to trigger a denial of service. Note that Cisco has investigated the issue, and has found that no official releases are affected. Only pre-release versions of NX-OS 6.0 are affected. (CVE-2014-2201)
last seen2020-06-01
modified2020-06-02
plugin id74241
published2014-05-30
reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/74241
titleCisco NX-OS Multiple Vulnerabilities (cisco-sa-20140521-nxos)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(74241);
  script_version("1.9");
  script_cvs_date("Date: 2019/11/26");

  script_cve_id(
    "CVE-2013-1191",
    "CVE-2014-2200",
    "CVE-2014-2201",
    "CVE-2014-3261"
  );
  script_bugtraq_id(
    67571,
    67574,
    67575,
    67578
  );
  script_xref(name:"CISCO-BUG-ID", value:"CSCti11629");
  script_xref(name:"CISCO-BUG-ID", value:"CSCug14405");
  script_xref(name:"CISCO-BUG-ID", value:"CSCts56628");
  script_xref(name:"CISCO-BUG-ID", value:"CSCts56632");
  script_xref(name:"CISCO-BUG-ID", value:"CSCts56633");
  script_xref(name:"CISCO-BUG-ID", value:"CSCuf61322");
  script_xref(name:"CISCO-BUG-ID", value:"CSCud88400");
  script_xref(name:"CISCO-BUG-ID", value:"CSCtw98915");
  script_xref(name:"CISCO-SA", value:"cisco-sa-20140521-nxos");

  script_name(english:"Cisco NX-OS Multiple Vulnerabilities (cisco-sa-20140521-nxos)");
  script_summary(english:"Checks the NX-OS version");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is running a vulnerable version of NX-OS.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote NX-OS device is
reportedly affected by one or more of the following vulnerabilities :

  - A privilege escalation flaw exists on systems with
    multiple virtual device contexts (VDCs) and local
    authentication configured. This could allow a
    remote, authenticated attacker to gain the privileges
    of an administrator in another VDC. Affects Nexus 7000
    series devices. (CVE-2013-1191)

  - A privilege escalation flaw exists on systems with
    multiple virtual device contexts (VDCs) and local
    authentication configured. This could allow a
    remote, authenticated attacker to gain the privileges
    of an administrator in another VDC. Affects Nexus 7000
    series devices. (CVE-2014-2200).

  - A buffer overflow flaw exists with the Smart Call Home
    feature. A remote attacker, with control of a
    configured SMTP server, could execute arbitrary code
    with elevated privileges. (CVE-2014-3261)

  - A denial of service flaw exists with the Message
    Transfer Service (MTS) due to a NULL pointer
    dereference. This could allow a remote attacker to
    trigger a denial of service. Note that Cisco has
    investigated the issue, and has found that no official
    releases are affected. Only pre-release versions of
    NX-OS 6.0 are affected. (CVE-2014-2201)");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/security/center/viewAlert.x?alertId=34245");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/security/center/viewAlert.x?alertId=34246");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/security/center/viewAlert.x?alertId=34247");
  script_set_attribute(attribute:"see_also", value:"https://tools.cisco.com/security/center/viewAlert.x?alertId=34248");
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140521-nxos
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?46c36c82");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2014/May/122");
  script_set_attribute(attribute:"solution", value:
"Upgrade to 4.1(2)E1(1l) / 5.0(3)U2(2) / 5.1(3)N1(1) / 6.1(5) or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-3261");

  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:"2014/05/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/05/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/30");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:nx-os");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CISCO");

  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("cisco_nxos_version.nasl");
  script_require_keys("Host/Cisco/NX-OS/Version", "Host/Cisco/NX-OS/Device", "Host/Cisco/NX-OS/Model");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

device = get_kb_item_or_exit("Host/Cisco/NX-OS/Device");
model = get_kb_item_or_exit("Host/Cisco/NX-OS/Model");
version = get_kb_item_or_exit("Host/Cisco/NX-OS/Version");

# Does not affect Nexus 1000v, 1010, 1100, 2000, 5600, 6000, 7700, 9000  series systems
if (
  device != 'Nexus' ||
  model =~ "^[1269][0-9][0-9][0-9]([^0-9]|$)$" ||
  model =~ "^56[0-9][0-9]([^0-9]|$)" ||
  model =~ "^77[0-9][0-9]([^0-9]|$)"
) audit(AUDIT_HOST_NOT, "affected");

fixed = '';

# Nexus 3000 5.0(3)U2(1) and prior affected
if (model =~ "^3[0-9][0-9][0-9]([^0-9]|$)")
{
  if (
    version =~ "^5\.0\(3\)U1\(" ||
    version =~ "^5\.0\(3\)U2\(1\)"
  ) fixed = "5.0(3)U2(2)";
}

# Nexus 4000 4.1(2)E1(1k) and prior affected
if (model =~ "^4[0-9][0-9][0-9]([^0-9]|$)")
{
  if (version =~ "^4\.1\(2\)E1\(1[a-k]?\)") fixed = "4.1(2)E1(1l)";
}

# Nexus 5000 4.X, 5.0.x affected
if (model =~ "^5[0-5][0-9][0-9]([^0-9]|$)")
{
  if (
    version =~ "^4\." ||
    version =~ "^5\.0\("
  ) fixed = "5.1(3)N1(1)";
}

# Nexus 7000 4.x, 5.x, 6.0(x),  6.1(4a) and prior affected
if (model =~ "^7[0-6][0-9][0-9]([^0-9]|$)")
{
  if (
    version =~ "^4\." ||
    version =~ "^5\." ||
    version =~ "^6\.0\(" ||
    version =~ "^6\.1\([0-4]a?\)"
  ) fixed = "6.1(5)";
}

if (!empty(fixed))
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Model             : ' + device + ' ' + model +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : ' + fixed +
      '\n';
    security_hole(port:0, extra:report);
  }
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");