Vulnerabilities > CVE-2019-12255 - Classic Buffer Overflow vulnerability in multiple products

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
windriver
netapp
sonicwall
siemens
belden
CWE-120
critical
nessus
exploit available
NVD
Published: 2019-08-09
Updated: 2024-11-21

Summary

Wind River VxWorks has a Buffer Overflow in the TCP component (issue 1 of 4). This is a IPNET security vulnerability: TCP Urgent Pointer = 0 that leads to an integer underflow.

Vulnerable Configurations

Part Description Count
OS
Windriver
13
OS
Netapp
2
OS
Sonicwall
37
OS
Siemens
25
OS
Belden
8
Hardware
Siemens
7
Hardware
Belden
31

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.

Exploit-Db

idEDB-ID:47233
last seen2019-08-12
modified2019-08-12
published2019-08-12
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/47233
titleVxWorks 6.8 - TCP Urgent Pointer = 0 Integer Underflow

Nessus

  • NASL familyMisc.
    NASL idXEROX_XRX19_016.NASL
    descriptionAccording to its self-reported version, the remote Xerox WorkCentre is affected by multiple remote code execution and denial-of-service vulnerabilities in the IPnet TCP/IP stack. An unauthenticated, remote, attacker could leverage these vulnerabilities to gain full access to the affected device or to cause the device to become unresponsive.
    last seen2020-06-01
    modified2020-06-02
    plugin id127109
    published2019-07-29
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127109
    titleXerox WorkCentre Multiple Vulnerabilities (XRX19-016) (URGENT/11)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(127109);
  script_version("1.4");
  script_cvs_date("Date: 2019/10/18 23:14:15");

  script_cve_id(
    "CVE-2019-12255",
    "CVE-2019-12256",
    "CVE-2019-12257",
    "CVE-2019-12258",
    "CVE-2019-12259",
    "CVE-2019-12260",
    "CVE-2019-12261",
    "CVE-2019-12262",
    "CVE-2019-12263",
    "CVE-2019-12264",
    "CVE-2019-12265"
  );
  script_xref(name:"IAVA", value:"2019-A-0274");

  script_name(english:"Xerox WorkCentre Multiple Vulnerabilities (XRX19-016) (URGENT/11)");
  script_summary(english:"Checks system software version of Xerox WorkCentre devices.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote Xerox WorkCentre
is  affected by multiple remote code execution and denial-of-service
vulnerabilities in the IPnet TCP/IP stack. An unauthenticated, remote,
attacker could leverage these vulnerabilities to gain full access to
the affected device or to cause the device to become unresponsive.");
  # https://securitydocs.business.xerox.com/wp-content/uploads/2019/07/cert_XRX19-016.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?94116ec1");
  script_set_attribute(attribute:"see_also", value:"https://armis.com/urgent11/");
  script_set_attribute(attribute:"solution", value:
"Apply the appropriate update as described in the Xerox
security bulletin in the referenced URL.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-12262");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/29");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:xerox:workcentre");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("xerox_workcentre_detect.nasl");
  script_require_keys("www/xerox_workcentre", "www/xerox_workcentre/model", "www/xerox_workcentre/ssw");

  exit(0);
}

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

# Get model and system software version
model = get_kb_item_or_exit("www/xerox_workcentre/model");
ver = get_kb_item_or_exit("www/xerox_workcentre/ssw");
ctrl = get_kb_item_or_exit("www/xerox_workcentre/ess");
vuln = FALSE;

ctrl_append = "367972v2";

if (model =~ "^58(45|55|65|75|90)$")
{
  less_or_equal = "072.190.165.14201";
  great_or_equal = "073.190.035.24100";
  fix = "072.190.196.34301";
}
else if (model =~ "^78(45|55)$")
{
  less_or_equal = "072.040.165.14201";
  great_or_equal = "073.040.035.24100";
  fix = "072.040.196.34301";
}
else
  audit(AUDIT_HOST_NOT, "an affected Xerox WorkCentre model");

if (
      ver_compare(ver:ver, fix:less_or_equal, strict:FALSE) <= 0 ||
      ver_compare(ver:ver, fix:great_or_equal, strict:FALSE) >= 0
    )
  vuln = TRUE;
else if (ctrl_append >!< ctrl)
{
  if(report_paranoia < 2)
    audit(AUDIT_POTENTIAL_VULN, "Xerox WorkCentre " + model + " System SW", ver);
  else vuln = TRUE;
}

if(!vuln) audit(AUDIT_INST_VER_NOT_VULN, "Xerox WorkCentre " + model + " System SW", ver);

report =
  '\n  Model                             : Xerox WorkCentre ' + model +
  '\n  Installed system software version : ' + ver +
  '\n  Fixed system software version     : ' + fix + ' and the 367972v2.dlm patch.\n';
security_report_v4(severity:SECURITY_HOLE, port:0, extra:report);
  • NASL familyMisc.
    NASL idVXWORKS_URGENT11.NASL
    descriptionAccording to its self-reported version, the remote device is potentially affected by multiple Wind River VxWorks remote code execution and denial-of-service vulnerabilities in the IPnet TCP/IP stack. An unauthenticated, remote, attacker could leverage these vulnerabilities to gain full access to the affected device or to cause the device to become unresponsive. Note that Nessus has not checked for the presence of the patch so this finding may be a false positive.
    last seen2020-06-01
    modified2020-06-02
    plugin id127108
    published2019-07-29
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127108
    titleWind River VxWorks Multiple Vulnerabilities (URGENT/11)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(127108);
  script_version("1.4");
  script_cvs_date("Date: 2019/10/18 23:14:15");

  script_cve_id(
    "CVE-2019-12255",
    "CVE-2019-12256",
    "CVE-2019-12257",
    "CVE-2019-12258",
    "CVE-2019-12259",
    "CVE-2019-12260",
    "CVE-2019-12261",
    "CVE-2019-12262",
    "CVE-2019-12263",
    "CVE-2019-12264",
    "CVE-2019-12265"
  );
  script_xref(name:"IAVA", value:"2019-A-0274");

  script_name(english:"Wind River VxWorks Multiple Vulnerabilities (URGENT/11)");
  script_summary(english:"Checks the OS fingerprint version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote VxWorks device is potentially affected by multiple remote
code execution and denial-of-service vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote device is
potentially affected by multiple Wind River VxWorks remote code
execution and denial-of-service vulnerabilities in the IPnet TCP/IP
stack. An unauthenticated, remote, attacker could leverage these
vulnerabilities to gain full access to the affected device or to cause
the device to become unresponsive.

Note that Nessus has not checked for the presence of the patch so this
finding may be a false positive.");
  # https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/security-advisory-ipnet/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e848e239");
  # https://go.armis.com/hubfs/White-papers/Urgent11%20Technical%20White%20Paper.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e1994faf");
  script_set_attribute(attribute:"see_also", value:"https://armis.com/urgent11/");
  script_set_attribute(attribute:"solution", value:
"Contact the device vendor to obtain the appropriate update");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-12262");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/29");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:windriver:vxworks");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

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

  script_dependencies("os_fingerprint.nasl");
  script_require_keys("Settings/ParanoidReport", "Host/OS");

  exit(0);
}

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

os = get_kb_item_or_exit("Host/OS");
if ("VxWorks" >!< os) audit(AUDIT_OS_NOT, "VxWorks");

match = pregmatch(pattern:"VxWorks ([0-9][0-9.]*)", string:os);
if (isnull(match)) exit(1, "Failed to identify the version of VxWorks.");
version = match[1];

if (report_paranoia < 2) audit(AUDIT_PARANOID);

vuln = FALSE;

if (version =~ "^6($|\.)" && ver_compare(ver:version, fix:'6.5', strict:FALSE) >= 0 &&
    ver_compare(ver:version, fix:"6.9.4.11", strict:FALSE) <= 0)
{
  vuln = TRUE;
}
else if (version =~ "^7($|\.)")
{
  vuln = TRUE;
}

if (vuln)
{
  report =
    '\n    Version       : ' + version +
    '\n    Fixed Version : Consult Vendor' +
    '\n';

  security_report_v4(port:0, severity:SECURITY_HOLE, extra:report);
}
else audit(AUDIT_OS_RELEASE_NOT, "VxWorks", version);
  • NASL familyFirewalls
    NASL idSONICWALL_SNWLID-2019-0009.NASL
    descriptionAccording to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected by multiple vulnerabilities: - Stack overflow in the parsing of IPv4 packets IP options. (CVE-2019-12256) - TCP Urgent Pointer = 0 leads to integer underflow (CVE-2019-12255) - TCP Urgent Pointer state confusion caused by malformed TCP AO option (CVE-2019-12260) - TCP Urgent Pointer state confusion during connect to a remote host (CVE-2019-12261) - TCP Urgent Pointer state confusion due to race condition (CVE-2019-12263) - Heap overflow in DHCP Offer/ACK parsing in ipdhcpc (CVE-2019-12257) - TCP connection DoS via malformed TCP options (CVE-2019-12258) - Handling of unsolicited Reverse ARP replies (Logical Flaw) (CVE-2019-12262) - Logical flaw in IPv4 assignment by the ipdhcpc DHCP client (CVE-2019-12264) - DoS via NULL dereference in IGMP parsing (CVE-2019-12259) - IGMP Information leak via IGMPv3 specific membership report (CVE-2019-12265) Note that Nessus has not tested for these issues but has instead relied only on the application
    last seen2020-06-01
    modified2020-06-02
    plugin id127107
    published2019-07-29
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127107
    titleSonicWall SonicOS Firewall Multiple Management Vulnerabilities (URGENT/11)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(127107);
  script_version("1.5");
  script_cvs_date("Date: 2019/10/18 23:14:14");

  script_cve_id(
    "CVE-2019-12255",
    "CVE-2019-12256",
    "CVE-2019-12257",
    "CVE-2019-12258",
    "CVE-2019-12259",
    "CVE-2019-12260",
    "CVE-2019-12261",
    "CVE-2019-12262",
    "CVE-2019-12263",
    "CVE-2019-12264",
    "CVE-2019-12265"
  );
  script_xref(name:"IAVA", value:"2019-A-0274");

  script_name(english:"SonicWall SonicOS Firewall Multiple Management Vulnerabilities (URGENT/11)");
  script_summary(english:"Checks the version of SonicOS.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, the remote SonicWall firewall is running a version of SonicOS that is affected
by multiple vulnerabilities:

  - Stack overflow in the parsing of IPv4 packets IP options. (CVE-2019-12256)

  - TCP Urgent Pointer = 0 leads to integer underflow (CVE-2019-12255)

  - TCP Urgent Pointer state confusion caused by malformed TCP AO option (CVE-2019-12260)

  - TCP Urgent Pointer state confusion during connect to a remote host (CVE-2019-12261)

  - TCP Urgent Pointer state confusion due to race condition (CVE-2019-12263)

  - Heap overflow in DHCP Offer/ACK parsing in ipdhcpc (CVE-2019-12257)

  - TCP connection DoS via malformed TCP options (CVE-2019-12258)

  - Handling of unsolicited Reverse ARP replies (Logical Flaw) (CVE-2019-12262)

  - Logical flaw in IPv4 assignment by the ipdhcpc DHCP client (CVE-2019-12264)

  - DoS via NULL dereference in IGMP parsing (CVE-2019-12259)

  - IGMP Information leak via IGMPv3 specific membership report (CVE-2019-12265)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009");
  # https://www.sonicwall.com/support/product-notification/?sol_id=190717234810906
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?06406a07");
  script_set_attribute(attribute:"see_also", value:"https://armis.com/urgent11/");
  # https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c7d3d59d");
  # https://go.armis.com/hubfs/White-papers/Urgent11%20Technical%20White%20Paper.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e1994faf");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in the vendor security advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-12262");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/29");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:sonicwall:sonicos");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

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

  script_dependencies("os_fingerprint.nasl");
  script_require_keys("Host/OS");

  exit(0);
}

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

os = get_kb_item_or_exit("Host/OS");
if (os !~ "^SonicOS" ) audit(AUDIT_OS_NOT, "SonicWall SonicOS");

# SonicOS Enhanced 5.9.1.10-1o on a SonicWALL NSA 220
match = pregmatch(pattern:"^SonicOS(?: Enhanced)? ([0-9.]+)(?:-[^ ]*)? on a SonicWALL (.*)$", string:os);
if (isnull(match)) exit(1, "Failed to identify the version of SonicOS.");
version = match[1];
model = match[2];

fix = NULL;

# NSA, TZ, SOHO (GEN5)
if (version =~ "^5\." && (model =~ "^(NSA|TZ|SOHO)") ) {
  if (version =~ "^5\.[0-8]\.")
    fix = NULL; # Patch not required.
  else if (version =~ "^5\.9\.0\.")
    fix = "5.9.0.8";
  else if (version =~ "^5\.9\.1\.")
    fix = "5.9.1.13";
}

# NSA, TZ, SOHO, SuperMassive 92xx/94xx/96xx (GEN6+)
if (version =~ "^6\." && (model =~ "^(NSA|TZ|SOHO|SuperMassive 9[246][0-9][0-9])") ) {
  if (version =~ "^6\.1\.")
    fix = NULL; # Patch not required.
  else if (version =~ "^6\.2\.[0-3]\.")
    fix = "6.2.3.2";
  else if (version =~ "^6\.2\.4\.")
    fix = "6.2.4.4";
  else if (version =~ "^6\.2\.5\.")
    fix = "6.2.5.4";
  else if (version =~ "^6\.2\.6\.")
    fix = "6.2.6.2";
  else if (version =~ "^6\.2\.7\.")
    fix = "6.2.7.5";
  else if (version =~ "^6\.2\.9\.")
    fix = "6.2.9.3";
  else if (version =~ "^6\.5\.0\.")
    fix = "6.5.0.4";
  else if (version =~ "^6\.5\.1\.")
    fix = "6.5.1.5";
  else if (version =~ "^6\.5\.2\.")
    fix = "6.5.2.4";
  else if (version =~ "^6\.5\.3\.")
    fix = "6.5.3.4";
  else if (version =~ "^6\.5\.4\.")
    fix = "6.5.4.4";
}

# SuperMassive 12K, 10K, 9800
if (model =~ "^SuperMassive (1[02]K|9800)") {
  if (version =~ "^6\.0\.")
    fix = NULL; # Patch not required.
  else if (version =~ "^6\.2\.7\.")
    fix = "6.2.7.11";
  else if (version =~ "^6\.4\.1\.")
    fix = "6.4.1.1";
  else if (version =~ "^6\.5\.1\.")
    fix = "6.5.1.10";
}

if (isnull(fix))
  audit(AUDIT_DEVICE_NOT_VULN, "SonicWALL " + model, "SonicOS " + version);

if (ver_compare(ver:version, fix:fix, strict:FALSE) < 0)
{
  port = 0;
  report =
    '\n  Device Model              : ' + model +
    '\n  Installed SonicOS version : ' + version +
    '\n  Fixed SonicOS version     : ' + fix +
    '\n';

  security_report_v4(port:port, extra:report, severity:SECURITY_HOLE);
}
else audit(AUDIT_DEVICE_NOT_VULN, "SonicWALL " + model, "SonicOS " + version);

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/154022/vxworks68-underflow.txt
idPACKETSTORM:154022
last seen2019-08-13
published2019-08-12
reporterZhou Yu
sourcehttps://packetstormsecurity.com/files/154022/VxWorks-6.8-Integer-Underflow.html
titleVxWorks 6.8 Integer Underflow

The Hacker News

idTHN:110765F121B8FFAB197ACDBB4C117D2E
last seen2019-07-29
modified2019-07-29
published2019-07-29
reporterThe Hacker News
sourcehttps://thehackernews.com/2019/07/vxworks-rtos-vulnerability.html
titleCritical Flaws Found in VxWorks RTOS That Powers Over 2 Billion Devices

Related news

References