Fedora 32 : 1:dovecot (2020-1dee17d880)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2020-1dee17d880.
#

include('compat.inc');

if (description)
{
  script_id(137106);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");

  script_cve_id("CVE-2020-10957", "CVE-2020-10958", "CVE-2020-10967");
  script_xref(name:"FEDORA", value:"2020-1dee17d880");

  script_name(english:"Fedora 32 : 1:dovecot (2020-1dee17d880)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"- CVE-2020-10957: lmtp/submission: A client can crash the
    server by sending a NOOP command with an invalid string
    parameter. This occurs particularly for a parameter that
    doesn't start with a double quote. This applies to all
    SMTP services, including submission-login, which makes
    it possible to crash the submission service without
    authentication.

  - CVE-2020-10958: lmtp/submission: Sending many invalid or
    unknown commands can cause the server to access freed
    memory, which can lead to a server crash. This happens
    when the server closes the connection with a '421 Too
    many invalid commands' error. The bad command limit
    depends on the service (lmtp or submission) and varies
    between 10 to 20 bad commands.

  - CVE-2020-10967: lmtp/submission: Issuing the RCPT
    command with an address that has the empty quoted string
    as local-part causes the lmtp service to crash.

----

dovecot updated to 2.3.10

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
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://bodhi.fedoraproject.org/updates/FEDORA-2020-1dee17d880");
  script_set_attribute(attribute:"solution", value:
"Update the affected 1:dovecot package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-10967");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-10957");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/05/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/05/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:1:dovecot");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:32");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Fedora 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/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^32([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 32", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC32", reference:"dovecot-2.3.10.1-1.fc32", epoch:"1")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "1:dovecot");
}