RedHat Update for xen RHSA-2011:0496-01

# SPDX-FileCopyrightText: 2011 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_xref(name:"URL", value:"https://www.redhat.com/archives/rhsa-announce/2011-May/msg00007.html");
  script_oid("1.3.6.1.4.1.25623.1.0.870433");
  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:"2011-05-17 15:58:48 +0200 (Tue, 17 May 2011)");
  script_tag(name:"cvss_base", value:"6.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_xref(name:"RHSA", value:"2011:0496-01");
  script_cve_id("CVE-2011-1583");
  script_name("RedHat Update for xen RHSA-2011:0496-01");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'xen'
  package(s) announced via the referenced advisory.");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 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");
  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_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.

  It was found that the xc_try_bzip2_decode() and xc_try_lzma_decode() decode
  routines did not correctly check for a possible buffer size overflow in the
  decoding loop. As well, several integer overflow flaws and missing
  error/range checking were found that could lead to an infinite loop. A
  privileged guest user could use these flaws to crash the guest or,
  possibly, execute arbitrary code in the privileged management domain
  (Dom0). (CVE-2011-1583)

  All xen users are advised to upgrade to these updated packages, which
  contain backported patches to correct these issues. The system must be
  rebooted for this update to take effect.");
  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");

  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~3.0.3~120.el5_6.2", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"xen-libs", rpm:"xen-libs~3.0.3~120.el5_6.2", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

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