Debian DSA-4892-1 : python-bleach - security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4892. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(148756);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/12");

  script_cve_id("CVE-2021-23980");
  script_xref(name:"DSA", value:"4892");

  script_name(english:"Debian DSA-4892-1 : python-bleach - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description",
    value:
"It was reported that python-bleach, a whitelist-based HTML-sanitizing
library, is prone to a mutation XSS vulnerability in bleach.clean
when'svg' or 'math' are in the allowed tags, 'p' or 'br' are in
allowed tags, 'style', 'title', 'noscript', 'script', 'textarea',
'noframes','iframe', or 'xmp' are in allowed tags and
'strip_comments=False' is set."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=986251"
  );
  # https://security-tracker.debian.org/tracker/source-package/python-bleach
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?2438169a"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/buster/python-bleach"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2021/dsa-4892"
  );
  script_set_attribute(
    attribute:"solution",
    value:
"Upgrade the python-bleach packages.

For the stable distribution (buster), this problem has been fixed in
version 3.1.2-0+deb10u2."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-23980");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-bleach");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/02/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/04/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/04/19");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  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:"10.0", prefix:"python-bleach", reference:"3.1.2-0+deb10u2")) flag++;
if (deb_check(release:"10.0", prefix:"python-bleach-doc", reference:"3.1.2-0+deb10u2")) flag++;
if (deb_check(release:"10.0", prefix:"python3-bleach", reference:"3.1.2-0+deb10u2")) 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");