Vulnerabilities > CVE-2013-1143 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Cisco IOS and IOS XE

047910
CVSS 7.1 - HIGH
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
COMPLETE
network
cisco
CWE-119
nessus
NVD
Published: 2013-03-28
Updated: 2013-03-29

Summary

The RSVP protocol implementation in Cisco IOS 12.2 and 15.0 through 15.2 and IOS XE 3.1.xS through 3.4.xS before 3.4.5S and 3.5.xS through 3.7.xS before 3.7.2S, when MPLS-TE is enabled, allows remote attackers to cause a denial of service (incorrect memory access and device reload) via a traffic engineering PATH message in an RSVP packet, aka Bug ID CSCtg39957.

Vulnerable Configurations

Part Description Count
OS
Cisco
25

Common Weakness Enumeration (CWE)

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-20130327-RSVP.NASL
descriptionThe Resource Reservation Protocol (RSVP) feature in Cisco IOS Software and Cisco IOS XE Software contains a vulnerability when used on a device that has Multiprotocol Label Switching with Traffic Engineering (MPLS-TE) enabled. Successful exploitation of the vulnerability could allow an unauthenticated, remote attacker to cause a reload of the affected device. Repeated exploitation could result in a sustained denial of service (DoS) condition. Cisco has released free software updates that address this vulnerability. There are no workarounds available to mitigate this vulnerability.
last seen2019-10-28
modified2013-04-10
plugin id65890
published2013-04-10
reporterThis script is Copyright (C) 2013-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/65890
titleCisco IOS Software Resource Reservation Protocol Denial of Service Vulnerability (cisco-sa-20130327-rsvp)
code
#TRUSTED 4cc784772cdcbcae5c8c30fc96c45ebd8605f3f1232dfd97a7853c2339d9f096444a89722d544c76cfc51228b80fc13a0d5bec308ff7ec087c5c6db55d23349283a4a91326fe03b17b67c88647e6b4fdedcef02837b3d652b497efa92981681c9f34b864be1f311028ab7726d26d7b02424b27d8dd9da045242344191dc4890fd067f8dd11928a6c8d36ff3cab1a5b71858a56a93c030618c14a55c52c0b55c593673c39e53a5aa6eab765c75dfda61fab37ae893c6dc7abac090cb2214d6b7067e9b1b2ffe8f4ecd175ca0b5f663a76185771786a749a66602168b5b6409349868af3ce9a9a1759f1757106c53bb9044ab36f8d72303c1e8aee7157d0ddf7d170b7112621aa461b607c3b4ee1d2f28f23000819dcbe890ef483aacc63ea803b8bf52205f491936a00520f9d6d14746a2cfa313d11d11971436eba48a5de112b709f67c1475330a1f4cb8d2c2dbb455b96339c9266809df06ea2221d50282c695b7279c5113d715d565d87a8af646f70f179ff9ce358fda58aaf5033e4aeee517078291e64a425c5c76da041a8cb6d4e7c2a5b435b6b15dc45d35135d303a79773056cf5cee975480d5d499acc2e9e1e2c1b9f3e686cf11b3179fb3d72e6dcdff45be6bf044d8b1973b21f0cd7a805da4cfd38e8f5fd5680f1032c5b5dfd675c7d0c9e8ea30ce3c456e4e4190efa3dc929bea61973e13a9a91721259ef42d1c7
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Cisco Security Advisory cisco-sa-20130327-rsvp.
# The text itself is copyright (C) Cisco
#

include("compat.inc");

if (description)
{
  script_id(65890);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2018/11/15");

  script_cve_id("CVE-2013-1143");
  script_bugtraq_id(58743);
  script_xref(name:"CISCO-BUG-ID", value:"CSCtg39957");
  script_xref(name:"CISCO-SA", value:"cisco-sa-20130327-rsvp");

  script_name(english:"Cisco IOS Software Resource Reservation Protocol Denial of Service Vulnerability (cisco-sa-20130327-rsvp)");
  script_summary(english:"Checks the IOS version.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote device is missing a vendor-supplied security patch."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The Resource Reservation Protocol (RSVP) feature in Cisco IOS Software
and Cisco IOS XE Software contains a vulnerability when used on a
device that has Multiprotocol Label Switching with Traffic Engineering
(MPLS-TE) enabled. Successful exploitation of the vulnerability could
allow an unauthenticated, remote attacker to cause a reload of the
affected device. Repeated exploitation could result in a sustained
denial of service (DoS) condition. Cisco has released free software
updates that address this vulnerability. There are no workarounds
available to mitigate this vulnerability."
  );
  # https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130327-rsvp
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?83e71d5a"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"Apply the relevant patch referenced in Cisco Security Advisory
cisco-sa-20130327-rsvp."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C");
  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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:cisco:ios");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/04/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/04/10");

  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");
  script_family(english:"CISCO");

  script_dependencies("cisco_ios_version.nasl");
  script_require_keys("Host/Cisco/IOS/Version");

  exit(0);
}



include("audit.inc");
include("cisco_func.inc");
include("cisco_kb_cmd_func.inc");

flag = 0;
override = 0;

version = get_kb_item_or_exit("Host/Cisco/IOS/Version");
if ( version == '12.2(33)SRE' ) flag++;
if ( version == '12.2(33)SRE0a' ) flag++;
if ( version == '12.2(33)SRE1' ) flag++;
if ( version == '12.2(33)SRE2' ) flag++;
if ( version == '12.2(33)SRE3' ) flag++;
if ( version == '12.2(33)SRE4' ) flag++;
if ( version == '12.2(33)SRE5' ) flag++;
if ( version == '12.2(33)SRE6' ) flag++;
if ( version == '12.2(33)SRE7' ) flag++;
if ( version == '12.2(33)SRE7a' ) flag++;
if ( version == '12.2(33)ZI' ) flag++;
if ( version == '12.2(58)EX' ) flag++;
if ( version == '12.2(58)EZ' ) flag++;
if ( version == '12.2(58)SE2' ) flag++;
if ( version == '15.0(1)MR' ) flag++;
if ( version == '15.0(1)S' ) flag++;
if ( version == '15.0(1)S1' ) flag++;
if ( version == '15.0(1)S2' ) flag++;
if ( version == '15.0(1)S3a' ) flag++;
if ( version == '15.0(1)S4' ) flag++;
if ( version == '15.0(1)S4a' ) flag++;
if ( version == '15.0(1)S5' ) flag++;
if ( version == '15.0(1)S6' ) flag++;
if ( version == '15.0(2)MR' ) flag++;
if ( version == '15.1(1)MR' ) flag++;
if ( version == '15.1(1)MR1' ) flag++;
if ( version == '15.1(1)MR2' ) flag++;
if ( version == '15.1(1)MR3' ) flag++;
if ( version == '15.1(1)MR4' ) flag++;
if ( version == '15.1(1)MR5' ) flag++;
if ( version == '15.1(1)S' ) flag++;
if ( version == '15.1(1)S1' ) flag++;
if ( version == '15.1(1)S2' ) flag++;
if ( version == '15.1(1)SA' ) flag++;
if ( version == '15.1(1)SA1' ) flag++;
if ( version == '15.1(1)SA2' ) flag++;
if ( version == '15.1(1)SY' ) flag++;
if ( version == '15.1(2)EY' ) flag++;
if ( version == '15.1(2)EY1' ) flag++;
if ( version == '15.1(2)EY1a' ) flag++;
if ( version == '15.1(2)EY2' ) flag++;
if ( version == '15.1(2)EY2a' ) flag++;
if ( version == '15.1(2)EY3' ) flag++;
if ( version == '15.1(2)EY4' ) flag++;
if ( version == '15.1(2)S' ) flag++;
if ( version == '15.1(2)S1' ) flag++;
if ( version == '15.1(2)S2' ) flag++;
if ( version == '15.1(2)SNG' ) flag++;
if ( version == '15.1(2)SNH' ) flag++;
if ( version == '15.1(2)SNH1' ) flag++;
if ( version == '15.1(2)SNI' ) flag++;
if ( version == '15.1(3)MR' ) flag++;
if ( version == '15.1(3)MRA' ) flag++;
if ( version == '15.1(3)S' ) flag++;
if ( version == '15.1(3)S0a' ) flag++;
if ( version == '15.1(3)S1' ) flag++;
if ( version == '15.1(3)S2' ) flag++;
if ( version == '15.1(3)S3' ) flag++;
if ( version == '15.1(3)S4' ) flag++;
if ( version == '15.2(1)S' ) flag++;
if ( version == '15.2(1)S1' ) flag++;
if ( version == '15.2(1)S2' ) flag++;
if ( version == '15.2(1)SA' ) flag++;
if ( version == '15.2(1)SB' ) flag++;
if ( version == '15.2(1)SB1' ) flag++;
if ( version == '15.2(1)SB2' ) flag++;
if ( version == '15.2(1)SB3' ) flag++;
if ( version == '15.2(1)SB4' ) flag++;
if ( version == '15.2(1)SC' ) flag++;
if ( version == '15.2(1)SC1' ) flag++;
if ( version == '15.2(2)S' ) flag++;
if ( version == '15.2(2)S0a' ) flag++;
if ( version == '15.2(2)S0b' ) flag++;
if ( version == '15.2(2)S0c' ) flag++;
if ( version == '15.2(2)S0d' ) flag++;
if ( version == '15.2(2)S1' ) flag++;
if ( version == '15.2(2)S2' ) flag++;
if ( version == '15.2(2)SNG' ) flag++;
if ( version == '15.2(2)SNH' ) flag++;
if ( version == '15.2(2)SNH1' ) flag++;
if ( version == '15.2(4)S' ) flag++;
if ( version == '15.2(4)S0c' ) flag++;
if ( version == '15.2(4)S0xb' ) flag++;
if ( version == '15.2(4)S1' ) flag++;

if (get_kb_item("Host/local_checks_enabled"))
{

  if (flag)
  {
    flag = 0;
    buf = cisco_command_kb_item("Host/Cisco/Config/show_running-config", "show running-config");
    if (check_cisco_result(buf))
    {
      if (preg(pattern:"mpls traffic-eng tunnels", multiline:TRUE, string:buf)) { flag = 1; }
    } else if (cisco_needs_enable(buf)) { flag = 1; override = 1; }
  }
}


if (flag)
{
  security_hole(port:0, extra:cisco_caveat(override));
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

References