Debian DLA-1667-1 : dovecot security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1667-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(122037);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/21");

  script_cve_id("CVE-2019-3814");

  script_name(english:"Debian DLA-1667-1 : dovecot security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"It was discovered that there was a vulnerability in the dovecot
IMAP/POP3 server.

A flaw in the TLS username handling could lead to an attacker logging
in as anyone else in the system if both
auth_ssl_{require_client,username_from}_cert were enabled.

For Debian 8 'Jessie', this issue has been fixed in dovecot version
1:2.2.13-12~deb8u5.

We recommend that you upgrade your dovecot packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. 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://lists.debian.org/debian-lts-announce/2019/02/msg00012.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/dovecot");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/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:H/PR:L/UI:N/S:U/C:H/I:H/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-2019-3814");

  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:"2019/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/02/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-gssapi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-imapd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-lmtpd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-lucene");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-managesieved");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-pgsql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-pop3d");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-sieve");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-solr");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dovecot-sqlite");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  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) 2019-2024 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:"8.0", prefix:"dovecot-core", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-dbg", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-dev", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-gssapi", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-imapd", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-ldap", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-lmtpd", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-lucene", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-managesieved", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-mysql", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-pgsql", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-pop3d", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-sieve", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-solr", reference:"1:2.2.13-12~deb8u5")) flag++;
if (deb_check(release:"8.0", prefix:"dovecot-sqlite", reference:"1:2.2.13-12~deb8u5")) 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");