CentOS 3 : openssh (CESA-2006:0298)

2006-08-04T00:00:00
ID CENTOS_RHSA-2006-0298.NASL
Type nessus
Reporter Tenable
Modified 2018-11-10T00:00:00

Description

Updated openssh packages that fix bugs in sshd are now available for Red Hat Enterprise Linux 3.

This update has been rated as having low security impact by the Red Hat Security Response Team.

OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation. This package includes the core files necessary for both the OpenSSH client and server.

An arbitrary command execution flaw was discovered in the way scp copies files locally. It is possible for a local attacker to create a file with a carefully crafted name that could execute arbitrary commands as the user running scp to copy files locally. (CVE-2006-0225)

The SSH daemon, when restricting host access by numeric IP addresses and with VerifyReverseMapping disabled, allows remote attackers to bypass 'from=' and 'user@host' address restrictions by connecting to a host from a system whose reverse DNS hostname contains the numeric IP address. (CVE-2003-0386)

The following issues have also been fixed in this update :

  • If the sshd service was stopped using the sshd init script while the main sshd daemon was not running, the init script would kill other sshd processes, such as the running sessions. For example, this could happen when the 'service sshd stop' command was issued twice.

  • When privilege separation was enabled, the last login message was printed only for the root user.

  • The sshd daemon was sending messages to the system log from a signal handler when debug logging was enabled. This could cause a deadlock of the user's connection.

All users of openssh should upgrade to these updated packages, which resolve these issues.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2006:0298 and 
# CentOS Errata and Security Advisory 2006:0298 respectively.
#

include("compat.inc");

if (description)
{
  script_id(22134);
  script_version("1.13");
  script_cvs_date("Date: 2018/11/10 11:49:27");

  script_cve_id("CVE-2003-0386", "CVE-2006-0225");
  script_xref(name:"RHSA", value:"2006:0298");

  script_name(english:"CentOS 3 : openssh (CESA-2006:0298)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated openssh packages that fix bugs in sshd are now available for
Red Hat Enterprise Linux 3.

This update has been rated as having low security impact by the Red
Hat Security Response Team.

OpenSSH is OpenBSD's SSH (Secure SHell) protocol implementation. This
package includes the core files necessary for both the OpenSSH client
and server.

An arbitrary command execution flaw was discovered in the way scp
copies files locally. It is possible for a local attacker to create a
file with a carefully crafted name that could execute arbitrary
commands as the user running scp to copy files locally.
(CVE-2006-0225)

The SSH daemon, when restricting host access by numeric IP addresses
and with VerifyReverseMapping disabled, allows remote attackers to
bypass 'from=' and 'user@host' address restrictions by connecting to a
host from a system whose reverse DNS hostname contains the numeric IP
address. (CVE-2003-0386)

The following issues have also been fixed in this update :

* If the sshd service was stopped using the sshd init script while the
main sshd daemon was not running, the init script would kill other
sshd processes, such as the running sessions. For example, this could
happen when the 'service sshd stop' command was issued twice.

* When privilege separation was enabled, the last login message was
printed only for the root user.

* The sshd daemon was sending messages to the system log from a signal
handler when debug logging was enabled. This could cause a deadlock of
the user's connection.

All users of openssh should upgrade to these updated packages, which
resolve these issues."
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-August/013093.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b4d59e30"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-August/013094.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f1bdec32"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-July/013050.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?92a3f2dd"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-server");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:3");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/08/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/08/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release")) audit(AUDIT_OS_NOT, "CentOS");
if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-3", reference:"openssh-3.6.1p2-33.30.9")) flag++;
if (rpm_check(release:"CentOS-3", reference:"openssh-askpass-3.6.1p2-33.30.9")) flag++;
if (rpm_check(release:"CentOS-3", reference:"openssh-askpass-gnome-3.6.1p2-33.30.9")) flag++;
if (rpm_check(release:"CentOS-3", reference:"openssh-clients-3.6.1p2-33.30.9")) flag++;
if (rpm_check(release:"CentOS-3", reference:"openssh-server-3.6.1p2-33.30.9")) 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");