Vulnerabilities > CVE-2003-0367 - Improper Input Validation vulnerability in multiple products

047910
CVSS 2.1 - LOW
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
local
low complexity
gnu
debian
CWE-20
nessus
NVD
Published: 2003-07-02
Updated: 2019-05-23

Summary

znew in the gzip package allows local users to overwrite arbitrary files via a symlink attack on temporary files.

Vulnerable Configurations

Part Description Count
Application
Gnu
7
OS
Debian
2

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.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyMandriva Local Security Checks
    NASL idMANDRAKE_MDKSA-2003-068.NASL
    descriptionA vulnerability exists in znew, a script included with gzip, that would create temporary files without taking precautions to avoid a symlink attack. Patches have been applied to make use of mktemp to generate unique filenames, and properly make use of noclobber in the script. Likewise, a fix for gzexe which had been applied previously was incomplete. It has been fixed to make full use of mktemp everywhere a temporary file is created. The znew problem was initially reported by Michal Zalewski and was again reported more recently to Debian by Paul Szabo.
    last seen2020-06-01
    modified2020-06-02
    plugin id14051
    published2004-07-31
    reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/14051
    titleMandrake Linux Security Advisory : gzip (MDKSA-2003:068)
    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-2003:068. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(14051);
  script_version ("1.21");
  script_cvs_date("Date: 2019/08/02 13:32:46");

  script_cve_id("CVE-1999-1332", "CVE-2003-0367");
  script_xref(name:"MDKSA", value:"2003:068");

  script_name(english:"Mandrake Linux Security Advisory : gzip (MDKSA-2003:068)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandrake Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A vulnerability exists in znew, a script included with gzip, that
would create temporary files without taking precautions to avoid a
symlink attack. Patches have been applied to make use of mktemp to
generate unique filenames, and properly make use of noclobber in the
script. Likewise, a fix for gzexe which had been applied previously
was incomplete. It has been fixed to make full use of mktemp
everywhere a temporary file is created.

The znew problem was initially reported by Michal Zalewski and was
again reported more recently to Debian by Paul Szabo."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=193375"
  );
  # http://marc.theaimsgroup.com/?l=bugtraq&m=88998519803911&w=2
  script_set_attribute(
    attribute:"see_also",
    value:"https://marc.info/?l=bugtraq&m=88998519803911&w=2"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected gzip package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:gzip");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:8.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:9.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:9.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2003/06/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/07/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 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:"MDK8.2", cpu:"i386", reference:"gzip-1.2.4a-11.2mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.0", cpu:"i386", reference:"gzip-1.2.4a-11.2mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.1", cpu:"i386", reference:"gzip-1.2.4a-11.2mdk", yank:"mdk")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
  else security_note(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyMandriva Local Security Checks
    NASL idMANDRAKE_MDKSA-2004-142.NASL
    descriptionThe Trustix developers found some insecure temporary file creation problems in the zdiff, znew, and gzeze supplemental scripts in the gzip package. These flaws could allow local users to overwrite files via a symlink attack. A similar problem was fixed last year (CVE-2003-0367) in which this same problem was found in znew. At that time, Mandrakesoft also used mktemp to correct the problems in gzexe. This update uses mktemp to handle temporary files in the zdiff script.
    last seen2020-06-01
    modified2020-06-02
    plugin id15915
    published2004-12-07
    reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/15915
    titleMandrake Linux Security Advisory : gzip (MDKSA-2004:142)
    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-2004:142. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(15915);
  script_version ("1.18");
  script_cvs_date("Date: 2019/08/02 13:32:47");

  script_cve_id("CVE-2004-0970");
  script_xref(name:"MDKSA", value:"2004:142");

  script_name(english:"Mandrake Linux Security Advisory : gzip (MDKSA-2004:142)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandrake Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The Trustix developers found some insecure temporary file creation
problems in the zdiff, znew, and gzeze supplemental scripts in the
gzip package. These flaws could allow local users to overwrite files
via a symlink attack.

A similar problem was fixed last year (CVE-2003-0367) in which this
same problem was found in znew. At that time, Mandrakesoft also used
mktemp to correct the problems in gzexe. This update uses mktemp to
handle temporary files in the zdiff script."
  );
  script_set_attribute(attribute:"solution", value:"Update the affected gzip package.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:gzip");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:10.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:10.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandrakesoft:mandrake_linux:9.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/12/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/12/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 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:"MDK10.0", reference:"gzip-1.2.4a-13.1.100mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK10.1", reference:"gzip-1.2.4a-13.1.101mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.2", reference:"gzip-1.2.4a-13.1.92mdk", yank:"mdk")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get());
  else security_note(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-308.NASL
    descriptionPaul Szabo discovered that znew, a script included in the gzip package, creates its temporary files without taking precautions to avoid a symlink attack (CAN-2003-0367). The gzexe script has a similar vulnerability which was patched in an earlier release but inadvertently reverted.
    last seen2020-06-01
    modified2020-06-02
    plugin id15145
    published2004-09-29
    reporterThis script is Copyright (C) 2004-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/15145
    titleDebian DSA-308-1 : gzip - insecure temporary files
    code
    #%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-308. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(15145);
  script_version("1.20");
  script_cvs_date("Date: 2019/08/02 13:32:17");

  script_cve_id("CVE-1999-1332", "CVE-2003-0367");
  script_bugtraq_id(7845, 7872);
  script_xref(name:"DSA", value:"308");

  script_name(english:"Debian DSA-308-1 : gzip - insecure temporary files");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Paul Szabo discovered that znew, a script included in the gzip
package, creates its temporary files without taking precautions to
avoid a symlink attack (CAN-2003-0367).

The gzexe script has a similar vulnerability which was patched in an
earlier release but inadvertently reverted."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2003/dsa-308"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"For the stable distribution (woody) both problems have been fixed in
version 1.3.2-3woody1.

For the old stable distribution (potato) CAN-2003-0367 has been fixed
in version 1.2.4-33.2. This version is not vulnerable to CVE-1999-1332
due to an earlier patch.

We recommend that you update your gzip package."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:N");
  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:"p-cpe:/a:debian:debian_linux:gzip");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2003/06/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_set_attribute(attribute:"vuln_publication_date", value:"1998/01/28");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"2.2", prefix:"gzip", reference:"1.2.4-33.2")) flag++;
if (deb_check(release:"3.0", prefix:"gzip", reference:"1.3.2-3woody1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_note(port:0, extra:deb_report_get());
  else security_note(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

Statements

contributorMark J Cox
lastmodified2007-03-14
organizationRed Hat
statementRed Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.

References