Amazon Linux AMI : libxslt (ALAS-2020-1464) (deprecated)

##
# (C) Tenable Network Security, Inc.
#
# @DEPRECATED@
#
# Disabled on 2020-12-23 due to Amazon pulling the previsouly published advisory.
#                                  
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2020-1464.
##

include('compat.inc');

if (description)
{
  script_id(144473);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/12/23");

  script_cve_id("CVE-2019-11068", "CVE-2019-18197");
  script_xref(name:"ALAS", value:"2020-1464");

  script_name(english:"Amazon Linux AMI : libxslt (ALAS-2020-1464) (deprecated)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(attribute:"synopsis", value:
"This plugin has been deprecated.");
  script_set_attribute(attribute:"description", value:
"The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by
multiple vulnerabilities as referenced in the ALAS-2020-1464 advisory.

  - libxslt through 1.1.33 allows bypass of a protection mechanism because callers of xsltCheckRead and
    xsltCheckWrite permit access even upon receiving a -1 error code. xsltCheckRead can return -1 for a
    crafted URL that is not actually invalid and is subsequently loaded. (CVE-2019-11068)

  - In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain
    circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds
    check could fail and memory outside a buffer could be written to, or uninitialized data could be
    disclosed. (CVE-2019-18197)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.

This plugin has been deprecated due to Amazon pulling the previously published advisory.");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/ALAS-2020-1464.html");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2019-11068");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/CVE-2019-18197");
  script_set_attribute(attribute:"solution", value:
"n/a");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-11068");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/12/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/19");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libxslt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libxslt-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libxslt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libxslt-python26");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libxslt-python27");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}

exit(0, "This plugin has been deprecated due to Amazon pulling the previously published advisory.");