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CentOS Update for openssl CESA-2013:0587 centos6

🗓️ 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 'openssl' package(s) announced via the referenced advisory. It was discovered that OpenSSL leaked timing information when decrypting TLS/SSL and DTLS protocol encrypted records when CBC-mode cipher suites were used. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a TLS/SSL or DTLS server as a padding oracle. A NULL pointer dereference flaw was found in the OCSP response verification in OpenSSL. A malicious OCSP server could use this flaw to crash applications performing OCSP verification by sending a specially-crafted response. It was discovered that the TLS/SSL protocol could leak information about plain text when optional compression was used. An attacker able to control part of the plain text sent over an encrypted TLS/SSL connection could possibly use this flaw to recover other portions of the plain text. This update disables zlib compression, which was previously enabled in OpenSSL by default. Applications using OpenSSL now need to explicitly enable zlib compression to use it. It was found that OpenSSL read certain environment variables even when used by a privileged (setuid or setgid) application. A local attacker could use this flaw to escalate their privileges

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Code
# 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/019630.html");
  script_oid("1.3.6.1.4.1.25623.1.0.881669");
  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 10:01:51 +0530 (Tue, 12 Mar 2013)");
  script_cve_id("CVE-2012-4929", "CVE-2013-0166", "CVE-2013-0169");
  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:"2013:0587");
  script_name("CentOS Update for openssl CESA-2013:0587 centos6");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'openssl'
  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=CentOS6");
  script_tag(name:"affected", value:"openssl on CentOS 6");
  script_tag(name:"solution", value:"Please install the updated packages.");
  script_tag(name:"insight", value:"OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3)
  and Transport Layer Security (TLS v1) protocols, as well as a
  full-strength, general purpose cryptography library.

  It was discovered that OpenSSL leaked timing information when decrypting
  TLS/SSL and DTLS protocol encrypted records when CBC-mode cipher suites
  were used. A remote attacker could possibly use this flaw to retrieve plain
  text from the encrypted packets by using a TLS/SSL or DTLS server as a
  padding oracle. (CVE-2013-0169)

  A NULL pointer dereference flaw was found in the OCSP response verification
  in OpenSSL. A malicious OCSP server could use this flaw to crash
  applications performing OCSP verification by sending a specially-crafted
  response. (CVE-2013-0166)

  It was discovered that the TLS/SSL protocol could leak information about
  plain text when optional compression was used. An attacker able to control
  part of the plain text sent over an encrypted TLS/SSL connection could
  possibly use this flaw to recover other portions of the plain text.
  (CVE-2012-4929)

  Note: This update disables zlib compression, which was previously enabled
  in OpenSSL by default. Applications using OpenSSL now need to explicitly
  enable zlib compression to use it.

  It was found that OpenSSL read certain environment variables even when used
  by a privileged (setuid or setgid) application. A local attacker could use
  this flaw to escalate their privileges. No application shipped with Red Hat
  Enterprise Linux 5 and 6 was affected by this problem. (BZ#839735)

  All OpenSSL users should upgrade to these updated packages, which contain
  backported patches to resolve these issues. For the update to take effect,
  all services linked to the OpenSSL library must be restarted, or the
  system rebooted.");
  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 == "CentOS6")
{

  if ((res = isrpmvuln(pkg:"openssl", rpm:"openssl~1.0.0~27.el6_4.2", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"openssl-devel", rpm:"openssl-devel~1.0.0~27.el6_4.2", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"openssl-perl", rpm:"openssl-perl~1.0.0~27.el6_4.2", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"openssl-static", rpm:"openssl-static~1.0.0~27.el6_4.2", rls:"CentOS6")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

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

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