GLSA-200411-29 : unarj: Long filenames buffer overflow and a path traversal vulnerability

2004-11-22T00:00:00
ID GENTOO_GLSA-200411-29.NASL
Type nessus
Reporter This script is Copyright (C) 2004-2021 Tenable Network Security, Inc.
Modified 2004-11-22T00:00:00

Description

The remote host is affected by the vulnerability described in GLSA-200411-29 (unarj: Long filenames buffer overflow and a path traversal vulnerability)

unarj has a bounds checking vulnerability within the handling of
long filenames in archives. It also fails to properly sanitize paths
when extracting an archive (if the 'x' option is used to preserve
paths).

Impact :

An attacker could trigger a buffer overflow or a path traversal by
enticing a user to open an archive containing specially crafted path
names, potentially resulting in the overwrite of files or execution of
arbitrary code with the permissions of the user running unarj.

Workaround :

There is no known workaround at this time.

                                        
                                            #%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200411-29.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(15777);
  script_version("1.18");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2004-0947", "CVE-2004-1027");
  script_xref(name:"GLSA", value:"200411-29");

  script_name(english:"GLSA-200411-29 : unarj: Long filenames buffer overflow and a path traversal vulnerability");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-200411-29
(unarj: Long filenames buffer overflow and a path traversal vulnerability)

    unarj has a bounds checking vulnerability within the handling of
    long filenames in archives. It also fails to properly sanitize paths
    when extracting an archive (if the 'x' option is used to preserve
    paths).
  
Impact :

    An attacker could trigger a buffer overflow or a path traversal by
    enticing a user to open an archive containing specially crafted path
    names, potentially resulting in the overwrite of files or execution of
    arbitrary code with the permissions of the user running unarj.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200411-29"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All unarj users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=app-arch/unarj-2.63a-r2'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:unarj");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2004/11/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/11/22");
  script_set_attribute(attribute:"vuln_publication_date", value:"2004/10/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2021 Tenable Network Security, Inc.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"app-arch/unarj", unaffected:make_list("ge 2.63a-r2"), vulnerable:make_list("lt 2.63a-r2"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "unarj");
}