GLSA-200706-05 : ClamAV: Multiple Denials of Service

#%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 200706-05.
#
# 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(25534);
  script_version("1.15");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2007-2650", "CVE-2007-3023", "CVE-2007-3024", "CVE-2007-3122", "CVE-2007-3123");
  script_xref(name:"GLSA", value:"200706-05");

  script_name(english:"GLSA-200706-05 : ClamAV: Multiple Denials of Service");
  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-200706-05
(ClamAV: Multiple Denials of Service)

    Several vulnerabilities were discovered in ClamAV by various
    researchers:
    Victor Stinner (INL) discovered that the OLE2
    parser may enter in an infinite loop (CVE-2007-2650).
    A
    boundary error was also reported by an anonymous researcher in the file
    unsp.c, which might lead to a buffer overflow (CVE-2007-3023).
    The file unrar.c contains a heap-based buffer overflow via a
    modified vm_codesize value from a RAR file (CVE-2007-3123).
    The RAR parsing engine can be bypassed via a RAR file with a header
    flag value of 10 (CVE-2007-3122).
    The cli_gentempstream()
    function from clamdscan creates temporary files with insecure
    permissions (CVE-2007-3024).
  
Impact :

    A remote attacker could send a specially crafted file to the scanner,
    possibly triggering one of the vulnerabilities. The two buffer
    overflows are reported to only cause Denial of Service. This would lead
    to a Denial of Service by CPU consumption or a crash of the scanner.
    The insecure temporary file creation vulnerability could be used by a
    local user to access sensitive data.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200706-05"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All ClamAV users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=app-antivirus/clamav-0.90.3'"
  );
  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:clamav");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2007/06/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/06/18");
  script_set_attribute(attribute:"vuln_publication_date", value:"2007/04/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2007-2021 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-antivirus/clamav", unaffected:make_list("ge 0.90.3"), vulnerable:make_list("lt 0.90.3"))) 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, "ClamAV");
}