Debian DSA-4682-1 : squid - security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4682. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(136430);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/13");

  script_cve_id(
    "CVE-2019-12519",
    "CVE-2019-12520",
    "CVE-2019-12521",
    "CVE-2019-12523",
    "CVE-2019-12524",
    "CVE-2019-12526",
    "CVE-2019-12528",
    "CVE-2019-18676",
    "CVE-2019-18677",
    "CVE-2019-18678",
    "CVE-2019-18679",
    "CVE-2020-11945",
    "CVE-2020-8449",
    "CVE-2020-8450"
  );
  script_xref(name:"DSA", value:"4682");

  script_name(english:"Debian DSA-4682-1 : squid - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"Multiple security issues were discovered in the Squid proxy caching
server, which could result in the bypass of security filters,
information disclosure, the execution of arbitrary code or denial of
service.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/squid");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/squid");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2020/dsa-4682");
  script_set_attribute(attribute:"solution", value:
"Upgrade the squid packages.

For the stable distribution (buster), these problems have been fixed
in version 4.6-1+deb10u2.");
  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-2020-8450");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-11945");

  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:"2019/11/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:squid");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  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) 2020-2024 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:"10.0", prefix:"squid", reference:"4.6-1+deb10u2")) flag++;
if (deb_check(release:"10.0", prefix:"squid-cgi", reference:"4.6-1+deb10u2")) flag++;
if (deb_check(release:"10.0", prefix:"squid-common", reference:"4.6-1+deb10u2")) flag++;
if (deb_check(release:"10.0", prefix:"squid-purge", reference:"4.6-1+deb10u2")) flag++;
if (deb_check(release:"10.0", prefix:"squid3", reference:"4.6-1+deb10u2")) flag++;
if (deb_check(release:"10.0", prefix:"squidclient", reference:"4.6-1+deb10u2")) 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");