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RedHat Update for ruby RHSA-2012:0070-01

🗓️ 01 Feb 2012 00:00:00Reported by Copyright (C) 2012 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. A denial of service flaw was found in the implementation of associative arrays (hashes) in Ruby. An attacker able to supply a large number of inputs to a Ruby application (such as HTTP POST request parameters sent to a web application) that are used as keys when inserting data into an array could trigger multiple hash function collisions, making array operations take an excessive amount of CPU time. To mitigate this issue, randomization has been added to the hash function to reduce the chance of an attacker successfully causing intentional collisions. (CVE-2011-4815) It was found that Ruby did not reinitialize the PRNG (pseudorandom number generator) after forking a child process. This could eventually lead to the PRNG returning the same result twice. An attacker keeping track of the values returned by one child process could use this flaw to predict the values the PRNG would return in other child processes (as long as the parent process persisted). Red Hat would like to thank oCERT for reporting CVE-2011-4815. oCERT acknowledges Julian Waelde and Alexander Klink as the original reporters of CVE-2011-4815. All users of ruby are advised to upgrade to these updated packages, which contain backported patches to resolve these issues

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Refs
Code
# SPDX-FileCopyrightText: 2012 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/2012-January/msg00026.html");
  script_oid("1.3.6.1.4.1.25623.1.0.870534");
  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:"2012-02-01 11:35:50 +0530 (Wed, 01 Feb 2012)");
  script_cve_id("CVE-2011-3009", "CVE-2011-4815", "CVE-2011-2686", "CVE-2011-2705");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_xref(name:"RHSA", value:"2012:0070-01");
  script_name("RedHat Update for ruby RHSA-2012:0070-01");

  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) 2012 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|4)");
  script_tag(name:"affected", value:"ruby on Red Hat Enterprise Linux (v. 5 server),
  Red Hat Enterprise Linux AS version 4,
  Red Hat Enterprise Linux ES version 4,
  Red Hat Enterprise Linux WS version 4");
  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.

  A denial of service flaw was found in the implementation of associative
  arrays (hashes) in Ruby. An attacker able to supply a large number of
  inputs to a Ruby application (such as HTTP POST request parameters sent to
  a web application) that are used as keys when inserting data into an array
  could trigger multiple hash function collisions, making array operations
  take an excessive amount of CPU time. To mitigate this issue, randomization
  has been added to the hash function to reduce the chance of an attacker
  successfully causing intentional collisions. (CVE-2011-4815)

  It was found that Ruby did not reinitialize the PRNG (pseudorandom number
  generator) after forking a child process. This could eventually lead to the
  PRNG returning the same result twice. An attacker keeping track of the
  values returned by one child process could use this flaw to predict the
  values the PRNG would return in other child processes (as long as the
  parent process persisted). (CVE-2011-3009)

  Red Hat would like to thank oCERT for reporting CVE-2011-4815. oCERT
  acknowledges Julian Waelde and Alexander Klink as the original reporters of
  CVE-2011-4815.

  All users of ruby are advised to upgrade to these updated packages, which
  contain backported patches to resolve these issues.");
  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:"ruby", rpm:"ruby~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-debuginfo", rpm:"ruby-debuginfo~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-devel", rpm:"ruby-devel~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-docs", rpm:"ruby-docs~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-irb", rpm:"ruby-irb~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-libs", rpm:"ruby-libs~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-mode", rpm:"ruby-mode~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-rdoc", rpm:"ruby-rdoc~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-ri", rpm:"ruby-ri~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-tcltk", rpm:"ruby-tcltk~1.8.5~22.el5_7.1", rls:"RHENT_5")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

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


if(release == "RHENT_4")
{

  if ((res = isrpmvuln(pkg:"irb", rpm:"irb~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby", rpm:"ruby~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-debuginfo", rpm:"ruby-debuginfo~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-devel", rpm:"ruby-devel~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-docs", rpm:"ruby-docs~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-libs", rpm:"ruby-libs~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-mode", rpm:"ruby-mode~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"ruby-tcltk", rpm:"ruby-tcltk~1.8.1~18.el4", rls:"RHENT_4")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

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

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21 Mar 2024 00:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 27.8
EPSS0.04246
35