Vulnerabilities > CVE-2006-5601 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Xsupplicant

047910
CVSS 9.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
xsupplicant
CWE-119
critical
nessus
NVD
Published: 2006-10-28
Updated: 2017-07-20

Summary

Stack-based buffer overflow in the eap_do_notify function in eap.c in xsupplicant before 1.2.6, and possibly other versions, allows remote authenticated users to execute arbitrary code via unspecified vectors.

Vulnerable Configurations

Part Description Count
Application
Xsupplicant
16

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 familySuSE Local Security Checks
    NASL idSUSE9_11386.NASL
    descriptionxsupplicant has been upgraded to version 1.2.8, which includes bugfixes and one security fix : - A post-authentication stack overflow in the EAP handling could be used by already authenticated attacker to overflow a stack buffer and so potentially execute code. (CVE-2006-5601)
    last seen2020-06-01
    modified2020-06-02
    plugin id41112
    published2009-09-24
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/41112
    titleSuSE9 Security Update : xsupplicant (YOU Patch Number 11386)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The text description of this plugin is (C) Novell, Inc.
#

include("compat.inc");

if (description)
{
  script_id(41112);
  script_version("1.6");
  script_cvs_date("Date: 2019/10/25 13:36:29");

  script_cve_id("CVE-2006-5601");

  script_name(english:"SuSE9 Security Update : xsupplicant (YOU Patch Number 11386)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 9 host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"xsupplicant has been upgraded to version 1.2.8, which includes
bugfixes and one security fix :

  - A post-authentication stack overflow in the EAP handling
    could be used by already authenticated attacker to
    overflow a stack buffer and so potentially execute code.
    (CVE-2006-5601)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2006-5601.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply YOU patch number 11386.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:suse:suse_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/01/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/09/24");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) exit(0, "Local checks are not enabled.");
if (!get_kb_item("Host/SuSE/release")) exit(0, "The host is not running SuSE.");
if (!get_kb_item("Host/SuSE/rpm-list")) exit(1, "Could not obtain the list of installed packages.");

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) exit(1, "Failed to determine the architecture type.");
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") exit(1, "Local checks for SuSE 9 on the '"+cpu+"' architecture have not been implemented.");


flag = 0;
if (rpm_check(release:"SUSE9", reference:"xsupplicant-1.2.8-14.2")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else exit(0, "The host is not affected.");
  • NASL familyMandriva Local Security Checks
    NASL idMANDRAKE_MDKSA-2006-189.NASL
    descriptionYannick Van Osselaer discovered a stack overflow in Xsupplicant, which could potentially be exploited by a remote, authenticated user to gain root priviledges. Additional code cleanups to fix potential memory leaks are also included. Updated packages have been patched to correct this issue.
    last seen2020-06-01
    modified2020-06-02
    plugin id24574
    published2007-02-18
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/24574
    titleMandrake Linux Security Advisory : xsupplicant (MDKSA-2006:189)
    code
    #%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandrake Linux Security Advisory MDKSA-2006:189. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(24574);
  script_version ("1.15");
  script_cvs_date("Date: 2019/08/02 13:32:48");

  script_cve_id("CVE-2006-5601", "CVE-2006-5602");
  script_xref(name:"MDKSA", value:"2006:189");

  script_name(english:"Mandrake Linux Security Advisory : xsupplicant (MDKSA-2006:189)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandrake Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Yannick Van Osselaer discovered a stack overflow in Xsupplicant, which
could potentially be exploited by a remote, authenticated user to gain
root priviledges. Additional code cleanups to fix potential memory
leaks are also included.

Updated packages have been patched to correct this issue."
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Update the affected xsupplicant, xsupplicant-devel and / or
xsupplicant-doc packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:xsupplicant");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:xsupplicant-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:xsupplicant-doc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2006");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2007");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/10/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/02/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/rpm-list");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK2006.0", reference:"xsupplicant-1.0.1-3.1.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", reference:"xsupplicant-doc-1.0.1-3.1.20060mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK2007.0", reference:"xsupplicant-1.2.6-1.1mdv2007.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2007.0", reference:"xsupplicant-devel-1.2.6-1.1mdv2007.0", yank:"mdv")) flag++;
if (rpm_check(release:"MDK2007.0", reference:"xsupplicant-doc-1.2.6-1.1mdv2007.0", yank:"mdv")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familySuSE Local Security Checks
    NASL idSUSE_XSUPPLICANT-2459.NASL
    descriptionxsupplicant has been upgraded to version 1.2.8, which includes bugfixes and one security fix : CVE-2006-5601: A post-authentication stack overflow in the EAP handling could be used by already authenticated attacker to overflow a stackbuffer and so potentially execute code.
    last seen2020-06-01
    modified2020-06-02
    plugin id27502
    published2007-10-17
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/27502
    titleopenSUSE 10 Security Update : xsupplicant (xsupplicant-2459)
    code
    #%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update xsupplicant-2459.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(27502);
  script_version ("1.12");
  script_cvs_date("Date: 2019/10/25 13:36:31");

  script_cve_id("CVE-2006-5601");

  script_name(english:"openSUSE 10 Security Update : xsupplicant (xsupplicant-2459)");
  script_summary(english:"Check for the xsupplicant-2459 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"xsupplicant has been upgraded to version 1.2.8, which includes
bugfixes and one security fix :

CVE-2006-5601: A post-authentication stack overflow in the EAP
handling could be used by already authenticated attacker to overflow a
stackbuffer and so potentially execute code."
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected xsupplicant package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xsupplicant");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:10.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/10/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE10\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "10.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE10.1", reference:"xsupplicant-1.2.8-14.5") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xsupplicant");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_XSUPPLICANT-2455.NASL
    descriptionxsupplicant has been upgraded to version 1.2.8, which includes bugfixes and one security fix : - A post-authentication stack overflow in the EAP handling could be used by already authenticated attacker to overflow a stackbuffer and so potentially execute code. (CVE-2006-5601)
    last seen2020-06-01
    modified2020-06-02
    plugin id29612
    published2007-12-13
    reporterThis script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/29612
    titleSuSE 10 Security Update : xsupplicant (ZYPP Patch Number 2455)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The text description of this plugin is (C) Novell, Inc.
#

include("compat.inc");

if (description)
{
  script_id(29612);
  script_version ("1.11");
  script_cvs_date("Date: 2019/10/25 13:36:31");

  script_cve_id("CVE-2006-5601");

  script_name(english:"SuSE 10 Security Update : xsupplicant (ZYPP Patch Number 2455)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 10 host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"xsupplicant has been upgraded to version 1.2.8, which includes
bugfixes and one security fix :

  - A post-authentication stack overflow in the EAP handling
    could be used by already authenticated attacker to
    overflow a stackbuffer and so potentially execute code.
    (CVE-2006-5601)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2006-5601.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply ZYPP patch number 2455.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:suse:suse_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/01/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/12/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) exit(0, "Local checks are not enabled.");
if (!get_kb_item("Host/SuSE/release")) exit(0, "The host is not running SuSE.");
if (!get_kb_item("Host/SuSE/rpm-list")) exit(1, "Could not obtain the list of installed packages.");

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) exit(1, "Failed to determine the architecture type.");
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") exit(1, "Local checks for SuSE 10 on the '"+cpu+"' architecture have not been implemented.");


flag = 0;
if (rpm_check(release:"SLES10", sp:0, reference:"xsupplicant-1.2.8-14.4")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else exit(0, "The host is not affected.");

References