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CentOS Update for ruby CESA-2013:0611 centos5

🗓️ 12 Mar 2013 00:00:00Reported by Copyright (C) 2013 Greenbone AGType 
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The remote host is missing an update for the 'ruby' package(s) announced via the referenced advisory. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks. It was discovered that Ruby's REXML library did not properly restrict XML entity expansion. An attacker could use this flaw to cause a denial of service by tricking a Ruby application using REXML to read text nodes from specially-crafted XML content, which will result in REXML consuming large amounts of system memory. Note that the update is for CentOS 5

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# SPDX-FileCopyrightText: 2013 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:"http://lists.centos.org/pipermail/centos-announce/2013-March/019271.html");
  script_oid("1.3.6.1.4.1.25623.1.0.881671");
  script_version("2026-04-24T06:23:04+0000");
  script_tag(name:"last_modification", value:"2026-04-24 06:23:04 +0000 (Fri, 24 Apr 2026)");
  script_tag(name:"creation_date", value:"2013-03-12 10:02:05 +0530 (Tue, 12 Mar 2013)");
  script_cve_id("CVE-2013-1821");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_xref(name:"CESA", value:"2013:0611");
  script_name("CentOS Update for ruby CESA-2013:0611 centos5");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'ruby'
  package(s) announced via the referenced advisory.");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2013 Greenbone AG");
  script_family("CentOS Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/centos", "ssh/login/rpms", re:"ssh/login/release=CentOS5");
  script_tag(name:"affected", value:"ruby on CentOS 5");
  script_tag(name:"solution", value:"Please install the updated packages.");
  script_tag(name:"insight", value:"Ruby is an extensible, interpreted, object-oriented, scripting language. It
  has features to process text files and to do system management tasks.

  It was discovered that Ruby's REXML library did not properly restrict XML
  entity expansion. An attacker could use this flaw to cause a denial of
  service by tricking a Ruby application using REXML to read text nodes from
  specially-crafted XML content, which will result in REXML consuming large
  amounts of system memory. (CVE-2013-1821)

  All users of Ruby are advised to upgrade to these updated packages, which
  contain backported patches to resolve this issue.");
  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 == "CentOS5")
{

  if ((res = isrpmvuln(pkg:"ruby", rpm:"ruby~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-devel", rpm:"ruby-devel~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-docs", rpm:"ruby-docs~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-irb", rpm:"ruby-irb~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-libs", rpm:"ruby-libs~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-mode", rpm:"ruby-mode~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-rdoc", rpm:"ruby-rdoc~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-ri", rpm:"ruby-ri~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-tcltk", rpm:"ruby-tcltk~1.8.5~29.el5_9", rls:"CentOS5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

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

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24 Apr 2026 00:00Current
8.4High risk
Vulners AI Score8.4
CVSS 25
EPSS0.06671
33