Mandrake Linux Security Advisory : gnutls (MDKSA-2006:166)

2007-02-18T00:00:00
ID MANDRAKE_MDKSA-2006-166.NASL
Type nessus
Reporter This script is Copyright (C) 2007-2019 Tenable Network Security, Inc.
Modified 2020-03-02T00:00:00

Description

verify.c in GnuTLS before 1.4.4, when using an RSA key with exponent 3, does not properly handle excess data in the digestAlgorithm.parameters field when generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents GnuTLS from correctly verifying X.509 and other certificates that use PKCS, a variant of CVE-2006-4339.

The provided packages have been patched to correct this issues.

                                        
                                            #%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-2006:166. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(24552);
  script_version ("1.16");
  script_cvs_date("Date: 2019/08/02 13:32:48");

  script_cve_id("CVE-2006-4790");
  script_xref(name:"MDKSA", value:"2006:166");

  script_name(english:"Mandrake Linux Security Advisory : gnutls (MDKSA-2006:166)");
  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:
"verify.c in GnuTLS before 1.4.4, when using an RSA key with exponent
3, does not properly handle excess data in the
digestAlgorithm.parameters field when generating a hash, which allows
remote attackers to forge a PKCS #1 v1.5 signature that is signed by
that RSA key and prevents GnuTLS from correctly verifying X.509 and
other certificates that use PKCS, a variant of CVE-2006-4339.

The provided packages have been patched to correct this issues."
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64gnutls11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64gnutls11-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:libgnutls11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:libgnutls11-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2006");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/09/19");
  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:"gnutls-1.0.25-2.2.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", cpu:"x86_64", reference:"lib64gnutls11-1.0.25-2.2.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", cpu:"x86_64", reference:"lib64gnutls11-devel-1.0.25-2.2.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", cpu:"i386", reference:"libgnutls11-1.0.25-2.2.20060mdk", yank:"mdk")) flag++;
if (rpm_check(release:"MDK2006.0", cpu:"i386", reference:"libgnutls11-devel-1.0.25-2.2.20060mdk", yank:"mdk")) flag++;


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