Debian DLA-1973-1 : libxslt security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1973-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(130286);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/16");

  script_cve_id("CVE-2019-18197");

  script_name(english:"Debian DLA-1973-1 : libxslt security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"A security vulnerability was discovered in libxslt, a XSLT 1.0
processing library written in C.

In xsltCopyText in transform.c, a pointer variable is not 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.

For Debian 8 'Jessie', this problem has been fixed in version
1.1.28-2+deb8u6.

We recommend that you upgrade your libxslt packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.");
  script_set_attribute(attribute:"see_also", value:"https://lists.debian.org/debian-lts-announce/2019/10/msg00037.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/libxslt");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/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:H/PR:N/UI:R/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-2019-18197");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxslt1-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxslt1-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxslt1.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-libxslt1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-libxslt1-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:xsltproc");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  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) 2019-2024 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:"8.0", prefix:"libxslt1-dbg", reference:"1.1.28-2+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"libxslt1-dev", reference:"1.1.28-2+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"libxslt1.1", reference:"1.1.28-2+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"python-libxslt1", reference:"1.1.28-2+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"python-libxslt1-dbg", reference:"1.1.28-2+deb8u6")) flag++;
if (deb_check(release:"8.0", prefix:"xsltproc", reference:"1.1.28-2+deb8u6")) flag++;

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