Rocky Linux 8 [CIQ] Security Update: libecap / libecap-debuginfo / libecap-debugsource / libecap-devel Multiple Vulnerabilities (crlsa-2020_4743)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(357553);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/01");

  script_cve_id(
    "CVE-2019-12520",
    "CVE-2019-12521",
    "CVE-2019-12523",
    "CVE-2019-12524",
    "CVE-2019-12526",
    "CVE-2019-12528",
    "CVE-2019-12529",
    "CVE-2019-12854",
    "CVE-2019-18676",
    "CVE-2019-18677",
    "CVE-2019-18678",
    "CVE-2019-18679",
    "CVE-2019-18860",
    "CVE-2020-8449",
    "CVE-2020-8450",
    "CVE-2020-14058",
    "CVE-2020-15049",
    "CVE-2020-24606"
  );

  script_name(english:"Rocky Linux 8 [CIQ] Security Update: libecap / libecap-debuginfo / libecap-debugsource / libecap-devel Multiple Vulnerabilities (crlsa-2020_4743)");

  script_set_attribute(attribute:"synopsis", value:
"The Rocky Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ
crlsa-2020_4743 advisory.

    * squid: Improper input validation in request allows for proxy manipulation (CVE-2019-12520)

    * squid: Off-by-one error in addStackElement allows for heap buffer overflow and crash (CVE-2019-12521)

    * squid: Improper input validation in URI processor (CVE-2019-12523)

    * squid: Improper access restriction in url_regex may lead to security bypass (CVE-2019-12524)

    * squid: Heap overflow issue in URN processing (CVE-2019-12526)

    * squid: Information Disclosure issue in FTP Gateway (CVE-2019-12528)

    * squid: Out of bounds read in Proxy-Authorization header causes DoS (CVE-2019-12529)

    * squid: Denial of service in cachemgr.cgi (CVE-2019-12854)

    * squid: Buffer overflow in URI processor (CVE-2019-18676)

    * squid: Cross-Site Request Forgery issue in HTTP Request processing (CVE-2019-18677)

    * squid: HTTP Request Splitting issue in HTTP message processing (CVE-2019-18678)

    * squid: Information Disclosure issue in HTTP Digest Authentication (CVE-2019-18679)

    * squid: Mishandled HTML in the host parameter to cachemgr.cgi results in insecure behaviour
    (CVE-2019-18860)

    * squid: Improper input validation issues in HTTP Request processing (CVE-2020-8449)

    * squid: Buffer overflow in reverse-proxy configurations (CVE-2020-8450)

    * squid: DoS in TLS handshake (CVE-2020-14058)

    * squid: Request smuggling and poisoning attack against the HTTP cache (CVE-2020-15049)

    * squid: Improper input validation could result in a DoS (CVE-2020-24606)

Tenable has extracted the preceding description block directly from the CIQ 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://bugzilla.redhat.com/show_bug.cgi?id=1730523");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770371");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1827558");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1730528");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770375");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1827562");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770356");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1798540");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1852550");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770360");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1798552");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1852554");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770349");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1798534");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1827570");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770365");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1817121");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1871705");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1730523");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1730528");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770349");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770356");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770360");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770365");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770371");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1770375");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1798534");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1798540");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1798552");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1817121");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1827558");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1827562");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1827570");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1852550");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1852554");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1871705");
  script_set_attribute(attribute:"see_also", value:"https://errata.build.resf.org/RLSA-2020:4743");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2020:4743");
  # https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2020_4743.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?386a5aa3");
  # https://github.com/ctrliq/advisories/blob/main/csaf/advisories/rocky/2020/crlsa-2020_4743.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?014e565e");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages based on the guidance in CIQ advisory crlsa-2020_4743.");
  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-2019-12526");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/07/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/OS/extended-third-party", "Host/local_checks_enabled", "Host/RockyLinux/release", "Host/RockyLinux/rpm-list", "Host/cpu");

  exit(0);
}
include('rpm2.inc');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (empty_or_null(third_party_support) || third_party_support != 'CIQ') exit(0, 'CIQ support not enabled.');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Rocky Linux' >!< os_product) audit(AUDIT_OS_NOT, 'Rocky Linux');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Rocky Linux');
if (! preg(pattern:"^8([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Rocky Linux 8', 'Rocky Linux ' + os_version);

if (!get_kb_item('Host/RockyLinux/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('aarch64' >!< cpu && 'x86_64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Rocky Linux', cpu);


var constraints = [
  {
    'release': '8',
    'pkgs': [
      {'reference':'libecap-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libecap-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libecap-debuginfo-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libecap-debuginfo-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libecap-debugsource-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libecap-debugsource-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libecap-devel-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'aarch64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'},
      {'reference':'libecap-devel-1.0.1-2.module+el8.4.0+404+316a0dc5', 'cpu':'x86_64', 'rpm_spec_vers_cmp':TRUE, 'epoch':'0'}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}


if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libecap / libecap-debuginfo / libecap-debugsource / libecap-devel');
}