Vulnerabilities > CVE-2006-6291 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Mailenable

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
COMPLETE
network
low complexity
mailenable
CWE-119
nessus
NVD
Published: 2006-12-05
Updated: 2019-10-03

Summary

Stack overflow in the IMAP module (MEIMAPS.EXE) in MailEnable Professional 1.6 through 1.83 and 2.0 through 2.33, and MailEnable Enterprise 1.1 through 1.40 and 2.0 through 2.33, allows remote authenticated users to cause a denial of service (crash) via a long argument containing * (asterisk) and ? (question mark) characters to the DELETE command, as addressed by the ME-10020 hotfix.

Vulnerable Configurations

Part Description Count
Application
Mailenable
95

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 familyWindows
NASL idMAILENABLE_ME_10021.NASL
descriptionThe IMAP server bundled with the version of MailEnable installed on the remote host reportedly fails to handle malicious arguments to the
last seen2020-06-01
modified2020-06-02
plugin id23756
published2006-12-04
reporterThis script is Copyright (C) 2006-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/23756
titleMailEnable IMAP Server Multiple Buffer Overflow Vulnerabilities (ME-10021)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(23756);
  script_version("1.20");
  script_cvs_date("Date: 2018/11/15 20:50:27");

  script_cve_id("CVE-2006-6290", "CVE-2006-6291");
  script_bugtraq_id(21362);
  script_xref(name:"Secunia", value:"23080");

  script_name(english:"MailEnable IMAP Server Multiple Buffer Overflow Vulnerabilities (ME-10021)");
  script_summary(english:"Checks version of MailEnable's MEIMAPS.exe");

  script_set_attribute(attribute:"synopsis", value:
"The remote IMAP server is affected by multiple buffer overflow
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The IMAP server bundled with the version of MailEnable installed on the
remote host reportedly fails to handle malicious arguments to the
'EXAMINE', 'SELECT', and 'DELETE' commands.  An authenticated, remote
attacker may be able to exploit these issues to crash the affected
service or to execute arbitrary code with LOCAL SYSTEM privileges.");
  script_set_attribute(attribute:"see_also", value:"https://secuniaresearch.flexerasoftware.com/secunia_research/2006-71/advisory/");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2006/Nov/533");
  script_set_attribute(attribute:"see_also", value:"http://www.mailenable.com/hotfix/");
  script_set_attribute(attribute:"solution", value:
"Apply Hotfix ME-10021.

Note that ME-10020 was initially listed as a solution, but it turns out
to be only a partial fix.  Affected users should apply ME-10021 to fully
address the issue.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:"vuln_publication_date", value:"2006/11/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/12/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mailenable:mailenable");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");
  script_copyright(english:"This script is Copyright (C) 2006-2018 Tenable Network Security, Inc.");

  script_dependencies("mailenable_detect.nasl");
  script_require_keys("SMB/MailEnable/Installed");
  script_require_ports(139, 445);

  exit(0);
}


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


if (!get_kb_item("SMB/MailEnable/Installed")) exit(0);
if (get_kb_item("SMB/MailEnable/Standard")) prod = "Standard";
if (get_kb_item("SMB/MailEnable/Professional")) prod = "Professional";
else if (get_kb_item("SMB/MailEnable/Enterprise")) prod = "Enterprise";


# Check version of MEIMAPS.exe.
if (prod == "Professional" || prod == "Enterprise")
{
  kb_base = "SMB/MailEnable/" + prod;
  ver = read_version_in_kb(kb_base+"/MEIMAPS/Version");
  if (isnull(ver)) exit(0);

  # nb: file version for MEIMAPS.exe from ME-10021 is 1.0.0.26.
  if (
    ver[0] == 0 ||
    (ver[0] == 1 && ver[1] == 0 && ver[2] == 0 && ver[3] < 26)
  )
  {
    # Let's make sure the product's version number agrees with what's reportedly affected.
    # nb: MailEnable version numbers are screwy!
    ver2 = get_kb_item(kb_base+"/Version");
    if (isnull(ver2)) exit(0);

    if (
      # 1.6-1.83 Professional Edition
      # 2.0-2.33 Professional Edition
      (prod == "Professional" && ver2 =~ "^(1\.([67]($|[0-9.])|8$|8[0-3])|2\.([0-2]($|[0-9.])|3($|[0-3])))") ||
      # 1.1-1.40 Enterprise Edition
      # 2.0-2.33 Enterprise Edition
      (prod == "Enterprise" && ver2 =~ "^(1\.([1-3]($|[0-9].)|4$)|2\.([0-2]($|[0-9.])|3($|[0-3])))")
    ) security_warning(get_kb_item("SMB/transport"));
  }
}

Saint

bid21362
descriptionMailEnable IMAP SELECT buffer overflow
idmail_imap_mailenable,mail_imap_mailenableent
osvdb31698
titlemailenable_imap_select
typeremote

References