RedHat Update for xen RHSA-2015:1002-01

# SPDX-FileCopyrightText: 2015 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.871361");
  script_version("2024-03-21T05:06:54+0000");
  script_tag(name:"last_modification", value:"2024-03-21 05:06:54 +0000 (Thu, 21 Mar 2024)");
  script_tag(name:"creation_date", value:"2015-06-09 11:00:33 +0200 (Tue, 09 Jun 2015)");
  script_cve_id("CVE-2015-3456");
  script_tag(name:"cvss_base", value:"7.7");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:L/Au:S/C:C/I:C/A:C");
  script_tag(name:"qod_type", value:"package");
  script_name("RedHat Update for xen RHSA-2015:1002-01");
  script_tag(name:"summary", value:"The remote host is missing an update for the 'xen'
  package(s) announced via the referenced advisory.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
  script_tag(name:"insight", value:"The xen packages contain administration tools and the xend service for
managing the kernel-xen kernel for virtualization on Red Hat Enterprise
Linux.

An out-of-bounds memory access flaw was found in the way QEMU's virtual
Floppy Disk Controller (FDC) handled FIFO buffer access while processing
certain FDC commands. A privileged guest user could use this flaw to crash
the guest or, potentially, execute arbitrary code on the host with the
privileges of the host's QEMU process corresponding to the guest.
(CVE-2015-3456)

Red Hat would like to thank Jason Geffner of CrowdStrike for reporting
this issue.

All xen users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. After installing the
updated packages, all running fully-virtualized guests must be restarted
for this update to take effect.");
  script_tag(name:"affected", value:"xen on Red Hat Enterprise Linux (v. 5 server)");
  script_tag(name:"solution", value:"Please Install the Updated Packages.");
  script_xref(name:"RHSA", value:"2015:1002-01");
  script_xref(name:"URL", value:"https://www.redhat.com/archives/rhsa-announce/2015-May/msg00013.html");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_family("Red Hat Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/rhel", "ssh/login/rpms", re:"ssh/login/release=RHENT_5");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release) exit(0);

res = "";

if(release == "RHENT_5")
{

  if ((res = isrpmvuln(pkg:"xen-debuginfo", rpm:"xen-debuginfo~3.0.3~146.el5_11", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"xen-libs", rpm:"xen-libs~3.0.3~146.el5_11", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99);
  exit(0);
}