Debian: Security Advisory (DLA-203-1)

# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.1.1.2.2015.203");
  script_cve_id("CVE-2012-1164", "CVE-2013-4449", "CVE-2014-9713", "CVE-2015-1545");
  script_tag(name:"creation_date", value:"2023-03-08 12:56:44 +0000 (Wed, 08 Mar 2023)");
  script_version("2024-02-02T05:06:10+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:10 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_name("Debian: Security Advisory (DLA-203-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 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=DEB6");

  script_xref(name:"Advisory-ID", value:"DLA-203-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2015/DLA-203-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'openldap' package(s) announced via the DLA-203-1 advisory.");

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

  script_tag(name:"insight", value:"Multiple vulnerabilities were found in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol.

Please carefully check whether you are affected by CVE-2014-9713: if you are, you will need to manually upgrade your configuration! See below for more details on this. Just upgrading the packages might not be enough!

CVE-2012-1164

Fix a crash when doing an attrsOnly search of a database configured with both the rwm and translucent overlays.

CVE-2013-4449

Michael Vishchers from Seven Principles AG discovered a denial of service vulnerability in slapd, the directory server implementation. When the server is configured to used the RWM overlay, an attacker can make it crash by unbinding just after connecting, because of an issue with reference counting.

CVE-2014-9713

The default Debian configuration of the directory database allows every users to edit their own attributes. When LDAP directories are used for access control, and this is done using user attributes, an authenticated user can leverage this to gain access to unauthorized resources.

Please note this is a Debian specific vulnerability.

The new package won't use the unsafe access control rule for new databases, but existing configurations won't be automatically modified. Administrators are incited to look at the README.Debian file provided by the updated package if they need to fix the access control rule.

CVE-2015-1545

Ryan Tandy discovered a denial of service vulnerability in slapd. When using the deref overlay, providing an empty attribute list in a query makes the daemon crashes.

Thanks to Ryan Tandy for preparing this update.");

  script_tag(name:"affected", value:"'openldap' package(s) on Debian 6.");

  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 == "DEB6") {

  if(!isnull(res = isdpkgvuln(pkg:"ldap-utils", ver:"2.4.23-7.3+deb6u1", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libldap-2.4-2", ver:"2.4.23-7.3+deb6u1", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libldap-2.4-2-dbg", ver:"2.4.23-7.3+deb6u1", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libldap2-dev", ver:"2.4.23-7.3+deb6u1", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"slapd", ver:"2.4.23-7.3+deb6u1", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"slapd-dbg", ver:"2.4.23-7.3+deb6u1", rls:"DEB6"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"slapd-smbk5pwd", ver:"2.4.23-7.3+deb6u1", rls:"DEB6"))) {
    report += res;
  }

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

exit(0);