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Debian LTS: Security Advisory for libapache2-mod-perl2 (DLA-1507-1)

2018-09-19T00:00:00
ID OPENVAS:1361412562310891507
Type openvas
Reporter Copyright (C) 2018 Greenbone Networks GmbH http://greenbone.net
Modified 2020-01-29T00:00:00

Description

Jan Ingvoldstad discovered that libapache2-mod-perl2 allows attackers to execute arbitrary Perl code by placing it in a user-owned .htaccess file, because (contrary to the documentation) there is no configuration option that permits Perl code for the administrator

                                        
                                            # Copyright (C) 2018 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of the respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.891507");
  script_version("2020-01-29T08:22:52+0000");
  script_cve_id("CVE-2011-2767");
  script_name("Debian LTS: Security Advisory for libapache2-mod-perl2 (DLA-1507-1)");
  script_tag(name:"last_modification", value:"2020-01-29 08:22:52 +0000 (Wed, 29 Jan 2020)");
  script_tag(name:"creation_date", value:"2018-09-19 00:00:00 +0200 (Wed, 19 Sep 2018)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  script_xref(name:"URL", value:"https://lists.debian.org/debian-lts-announce/2018/09/msg00018.html");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2018 Greenbone Networks GmbH http://greenbone.net");
  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=DEB8");

  script_tag(name:"affected", value:"libapache2-mod-perl2 on Debian Linux");

  script_tag(name:"solution", value:"For Debian 8 'Jessie', this problem has been fixed in version
2.0.9~1624218-2+deb8u3.

We recommend that you upgrade your libapache2-mod-perl2 packages.");

  script_tag(name:"summary", value:"Jan Ingvoldstad discovered that libapache2-mod-perl2 allows attackers to
execute arbitrary Perl code by placing it in a user-owned .htaccess
file, because (contrary to the documentation) there is no configuration
option that permits Perl code for the administrator's control of HTTP
request processing without also permitting unprivileged users to run
Perl code in the context of the user account that runs Apache HTTP
Server processes.");

  script_tag(name:"vuldetect", value:"This check tests the installed software version using the apt package manager.");

  exit(0);
}

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

res = "";
report = "";
if(!isnull(res = isdpkgvuln(pkg:"libapache2-mod-perl2", ver:"2.0.9~1624218-2+deb8u3", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libapache2-mod-perl2-dev", ver:"2.0.9~1624218-2+deb8u3", rls:"DEB8"))) {
  report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libapache2-mod-perl2-doc", ver:"2.0.9~1624218-2+deb8u3", rls:"DEB8"))) {
  report += res;
}

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