Mandrake Linux Security Advisory : gnupg (MDKSA-2005:057)

2005-03-16T00:00:00
ID MANDRAKE_MDKSA-2005-057.NASL
Type nessus
Reporter Tenable
Modified 2018-07-19T00:00:00

Description

The OpenPGP protocol is vulnerable to a timing-attack in order to gain plain text from cipher text. The timing difference appears as a side effect of the so-called 'quick scan' and is only exploitable on systems that accept an arbitrary amount of cipher text for automatic decryption.

The updated packages have been patched to disable the quick check for all public key-encrypted messages and files.

                                        
                                            #%NASL_MIN_LEVEL 70103

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandrake Linux Security Advisory MDKSA-2005:057. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(17334);
  script_version ("1.15");
  script_cvs_date("Date: 2018/07/19 20:59:13");

  script_cve_id("CVE-2005-0366");
  script_xref(name:"CERT", value:"303094");
  script_xref(name:"MDKSA", value:"2005:057");

  script_name(english:"Mandrake Linux Security Advisory : gnupg (MDKSA-2005:057)");
  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 OpenPGP protocol is vulnerable to a timing-attack in order to gain
plain text from cipher text. The timing difference appears as a side
effect of the so-called 'quick scan' and is only exploitable on
systems that accept an arbitrary amount of cipher text for automatic
decryption.

The updated packages have been patched to disable the quick check for
all public key-encrypted messages and files."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.pgp.com/library/ctocorner/openpgp.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected gnupg package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:gnupg");
  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:"2005/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/03/16");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2005-2018 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:"gnupg-1.2.4-1.1.100mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK10.1", reference:"gnupg-1.2.4-1.1.101mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK9.2", reference:"gnupg-1.2.3-3.2.92mdk", 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");