Scientific Linux Security Update : pam_krb5 on SL3.x i386/x86_64

2012-08-01T00:00:00
ID SL_20080804_PAM_KRB5_ON_SL3_X.NASL
Type nessus
Reporter Tenable
Modified 2012-08-01T00:00:00

Description

These updated pam-krb5 packages fix a bug which caused user authentication to fail under certain circumstances. When authenticating a user, if the user's password was expired, the module would attempt to obtain password-changing credentials in order to verify the user's password. When the module was configured to validate credentials, it would incorrectly attempt to validate the password-changing credentials, which cannot be validated in the way that a ticket-granting ticket can. In these updated packages, an exception is made in this case, thus resolving the issue.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(60460);
  script_version("$Revision: 1.1 $");
  script_cvs_date("$Date: 2012/08/01 14:38:53 $");

  script_name(english:"Scientific Linux Security Update : pam_krb5 on SL3.x i386/x86_64");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Scientific Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"These updated pam-krb5 packages fix a bug which caused user
authentication to fail under certain circumstances. When
authenticating a user, if the user's password was expired, the module
would attempt to obtain password-changing credentials in order to
verify the user's password. When the module was configured to validate
credentials, it would incorrectly attempt to validate the
password-changing credentials, which cannot be validated in the way
that a ticket-granting ticket can. In these updated packages, an
exception is made in this case, thus resolving the issue."
  );
  # http://listserv.fnal.gov/scripts/wa.exe?A2=ind0808&L=scientific-linux-errata&T=0&P=1538
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?66e98fe7"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected pam_krb5 package."
  );
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/08/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012 Tenable Network Security, Inc.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/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);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL3", reference:"pam_krb5-1.81-1")) flag++;


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