Debian DLA-2564-1 : php-horde-text-filter security update

2021-02-22T00:00:00
ID DEBIAN_DLA-2564.NASL
Type nessus
Reporter This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2021-04-16T00:00:00

Description

Alex Birnberg discovered a cross-site scripting (XSS) vulnerability in the Horde Application Framework, more precisely its Text Filter API. An attacker could take control of a user's mailbox by sending a crafted e-mail.

CVE-2021-26929

An XSS issue was discovered in Horde Groupware Webmail Edition (where the Horde_Text_Filter library is used). The attacker can send a plain text e-mail message, with JavaScript encoded as a link or email that is mishandled by preProcess in Text2html.php, because bespoke use of \x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.

For Debian 9 stretch, this problem has been fixed in version 2.3.5-1+deb9u1.

We recommend that you upgrade your php-horde-text-filter packages.

For the detailed security status of php-horde-text-filter please refer to its security tracker page at: https://security-tracker.debian.org/tracker/php-horde-text-filter

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2564-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(146700);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/16");

  script_cve_id("CVE-2021-26929");

  script_name(english:"Debian DLA-2564-1 : php-horde-text-filter security update");
  script_summary(english:"Checks dpkg output for the updated package.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description",
    value:
"Alex Birnberg discovered a cross-site scripting (XSS) vulnerability in
the Horde Application Framework, more precisely its Text Filter API.
An attacker could take control of a user's mailbox by sending a
crafted e-mail.

CVE-2021-26929

An XSS issue was discovered in Horde Groupware Webmail Edition (where
the Horde_Text_Filter library is used). The attacker can send a plain
text e-mail message, with JavaScript encoded as a link or email that
is mishandled by preProcess in Text2html.php, because bespoke use of
\x00\x00\x00 and \x01\x01\x01 interferes with XSS defenses.

For Debian 9 stretch, this problem has been fixed in version
2.3.5-1+deb9u1.

We recommend that you upgrade your php-horde-text-filter packages.

For the detailed security status of php-horde-text-filter please refer
to its security tracker page at:
https://security-tracker.debian.org/tracker/php-horde-text-filter

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/2021/02/msg00028.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/php-horde-text-filter"
  );
  # https://security-tracker.debian.org/tracker/source-package/php-horde-text-filter
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b9957030"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Upgrade the affected php-horde-text-filter package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/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:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:php-horde-text-filter");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/02/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/02/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/02/22");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  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:"9.0", prefix:"php-horde-text-filter", reference:"2.3.5-1+deb9u1")) 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");