Debian: Security Advisory (DSA-4385-1)

# SPDX-FileCopyrightText: 2019 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.704385");
  script_cve_id("CVE-2019-3814");
  script_tag(name:"creation_date", value:"2019-02-04 23:00:00 +0000 (Mon, 04 Feb 2019)");
  script_version("2024-02-02T05:06:06+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.9");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:S/C:P/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-03-28 14:18:30 +0000 (Thu, 28 Mar 2019)");

  script_name("Debian: Security Advisory (DSA-4385-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB9");

  script_xref(name:"Advisory-ID", value:"DSA-4385-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2019/DSA-4385-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4385");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/dovecot");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'dovecot' package(s) announced via the DSA-4385-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"halfdog discovered an authentication bypass vulnerability in the Dovecot email server. Under some configurations Dovecot mistakenly trusts the username provided via authentication instead of failing. If there is no additional password verification, this allows the attacker to login as anyone else in the system. Only installations using:

auth_ssl_require_client_cert = yes

auth_ssl_username_from_cert = yes

are affected by this flaw.

For the stable distribution (stretch), this problem has been fixed in version 1:2.2.27-3+deb9u3.

We recommend that you upgrade your dovecot packages.

For the detailed security status of dovecot please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'dovecot' package(s) on Debian 9.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

release = dpkg_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-core", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-dbg", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-dev", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-gssapi", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-imapd", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-ldap", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-lmtpd", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-lucene", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-managesieved", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-mysql", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-pgsql", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-pop3d", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-sieve", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-solr", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"dovecot-sqlite", ver:"1:2.2.27-3+deb9u3", rls:"DEB9"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);