Debian dla-4083 : squid - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4083. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(232586);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/30");

  script_cve_id("CVE-2024-25111", "CVE-2024-37894", "CVE-2024-45802");
  script_xref(name:"IAVB", value:"2024-B-0087-S");
  script_xref(name:"IAVB", value:"2024-B-0168-S");

  script_name(english:"Debian dla-4083 : squid - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4083 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4083-1                [email protected]
    https://www.debian.org/lts/security/                   Jochen Sprickerhof
    March 11, 2025                                https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : squid
    Version        : 4.13-10+deb11u4
    CVE ID         : CVE-2024-25111 CVE-2024-37894 CVE-2024-45802
    Debian Bug     :

    Several security vulnerabilities have been discovered in Squid, a full featured
    web proxy cache.

    CVE-2024-25111

        A possible Denial of Service attack against HTTP Chunked decoder due
        to an uncontrolled recursion bug. This problem allows a remote
        attacker to cause Denial of Service when sending a crafted, chunked,
        encoded HTTP Message.

    CVE-2024-37894

        Due to an Out-of-bounds Write error when assigning ESI variables,
        Squid is susceptible to a Memory Corruption error. This error can
        lead to a Denial of Service attack.

    CVE-2024-45802

        Disable ESI feature support.
        - Due to Input Validation, Premature Release of Resource During Expected
          Lifetime, and Missing Release of Resource after Effective Lifetime bugs,
          Squid is vulnerable to Denial of Service attacks by a trusted server
          against all clients using the proxy. This problem is fixed by changing
          the build configuration to specify the --disable-esi option.

    For Debian 11 bullseye, these problems have been fixed in version
    4.13-10+deb11u4.

    We recommend that you upgrade your squid packages.

    For the detailed security status of squid please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/squid

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    Attachment:
    signature.asc
    Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/squid");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-25111");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-37894");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-45802");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/squid");
  script_set_attribute(attribute:"solution", value:
"Upgrade the squid packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:L/PR:N/UI:N/S:U/C:N/I:N/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-2024-45802");

  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:"2024/03/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/03/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/03/11");

  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:"p-cpe:/a:debian:debian_linux:squid-cgi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:squid-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:squid-openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:squid-purge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:squidclient");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025-2026 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('debian_package.inc');

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

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', 'Debian ' + debian_release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);

var pkgs = [
    {'release': '11.0', 'prefix': 'squid', 'reference': '4.13-10+deb11u4'},
    {'release': '11.0', 'prefix': 'squid-cgi', 'reference': '4.13-10+deb11u4'},
    {'release': '11.0', 'prefix': 'squid-common', 'reference': '4.13-10+deb11u4'},
    {'release': '11.0', 'prefix': 'squid-openssl', 'reference': '4.13-10+deb11u4'},
    {'release': '11.0', 'prefix': 'squid-purge', 'reference': '4.13-10+deb11u4'},
    {'release': '11.0', 'prefix': 'squidclient', 'reference': '4.13-10+deb11u4'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'squid / squid-cgi / squid-common / squid-openssl / squid-purge / etc');
}