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nessusThis script is Copyright (C) 2014-2023 and is owned by Tenable, Inc. or an Affiliate thereof.DEBIAN_DSA-3053.NASL
HistoryOct 17, 2014 - 12:00 a.m.

Debian DSA-3053-1 : openssl - security update (POODLE)

2014-10-1700:00:00
This script is Copyright (C) 2014-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
35

Several vulnerabilities have been found in OpenSSL, the Secure Sockets Layer library and toolkit.

  • CVE-2014-3513 A memory leak flaw was found in the way OpenSSL parsed the DTLS Secure Real-time Transport Protocol (SRTP) extension data. A remote attacker could send multiple specially crafted handshake messages to exhaust all available memory of an SSL/TLS or DTLS server.

  • CVE-2014-3566 (‘POODLE’) A flaw was found in the way SSL 3.0 handled padding bytes when decrypting messages encrypted using block ciphers in cipher block chaining (CBC) mode. This flaw allows a man-in-the-middle (MITM) attacker to decrypt a selected byte of a cipher text in as few as 256 tries if they are able to force a victim application to repeatedly send the same data over newly created SSL 3.0 connections.

This update adds support for Fallback SCSV to mitigate this issue.

  • CVE-2014-3567 A memory leak flaw was found in the way an OpenSSL handled failed session ticket integrity checks. A remote attacker could exhaust all available memory of an SSL/TLS or DTLS server by sending a large number of invalid session tickets to that server.

  • CVE-2014-3568 When OpenSSL is configured with ‘no-ssl3’ as a build option, servers could accept and complete a SSL 3.0 handshake, and clients could be configured to send them.

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3053. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(78520);
  script_version("1.28");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/06/26");

  script_cve_id(
    "CVE-2014-3513",
    "CVE-2014-3566",
    "CVE-2014-3567",
    "CVE-2014-3568"
  );
  script_bugtraq_id(
    70574,
    70584,
    70585,
    70586
  );
  script_xref(name:"DSA", value:"3053");

  script_name(english:"Debian DSA-3053-1 : openssl - security update (POODLE)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"Several vulnerabilities have been found in OpenSSL, the Secure Sockets
Layer library and toolkit.

  - CVE-2014-3513
    A memory leak flaw was found in the way OpenSSL parsed
    the DTLS Secure Real-time Transport Protocol (SRTP)
    extension data. A remote attacker could send multiple
    specially crafted handshake messages to exhaust all
    available memory of an SSL/TLS or DTLS server.

  - CVE-2014-3566 ('POODLE')
    A flaw was found in the way SSL 3.0 handled padding
    bytes when decrypting messages encrypted using block
    ciphers in cipher block chaining (CBC) mode. This flaw
    allows a man-in-the-middle (MITM) attacker to decrypt a
    selected byte of a cipher text in as few as 256 tries if
    they are able to force a victim application to
    repeatedly send the same data over newly created SSL 3.0
    connections. 

  This update adds support for Fallback SCSV to mitigate this issue.

  - CVE-2014-3567
    A memory leak flaw was found in the way an OpenSSL
    handled failed session ticket integrity checks. A remote
    attacker could exhaust all available memory of an
    SSL/TLS or DTLS server by sending a large number of
    invalid session tickets to that server. 

  - CVE-2014-3568
    When OpenSSL is configured with 'no-ssl3' as a build
    option, servers could accept and complete a SSL 3.0
    handshake, and clients could be configured to send them.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2014-3513");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2014-3566");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2014-3567");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2014-3568");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/wheezy/openssl");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2014/dsa-3053");
  script_set_attribute(attribute:"solution", value:
"Upgrade the openssl packages.

For the stable distribution (wheezy), these problems have been fixed
in version 1.0.1e-2+deb7u13.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/10/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/10/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2014-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"libssl-dev", reference:"1.0.1e-2+deb7u13")) flag++;
if (deb_check(release:"7.0", prefix:"libssl-doc", reference:"1.0.1e-2+deb7u13")) flag++;
if (deb_check(release:"7.0", prefix:"libssl1.0.0", reference:"1.0.1e-2+deb7u13")) flag++;
if (deb_check(release:"7.0", prefix:"libssl1.0.0-dbg", reference:"1.0.1e-2+deb7u13")) flag++;
if (deb_check(release:"7.0", prefix:"openssl", reference:"1.0.1e-2+deb7u13")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");