Vulnerabilities > CVE-2018-1000671 - Open Redirect vulnerability in multiple products

047910
CVSS 5.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
NONE
network
sympa
debian
CWE-601
nessus
NVD
Published: 2018-09-06
Updated: 2020-11-09

Summary

sympa version 6.2.16 and later contains a CWE-601: URL Redirection to Untrusted Site ('Open Redirect') vulnerability in The "referer" parameter of the wwsympa.fcgi login action. that can result in Open redirection and reflected XSS via data URIs. This attack appear to be exploitable via Victim's browser must follow a URL supplied by the attacker. This vulnerability appears to have been fixed in none available.

Vulnerable Configurations

Part Description Count
Application
Sympa
66
OS
Debian
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Fake the Source of Data
    An adversary provides data under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or it might be an attempt by the adversary to assume the rights granted to another identity. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.

Nessus

NASL familyDebian Local Security Checks
NASL idDEBIAN_DLA-1512.NASL
descriptionAn Open Redirect vulnerability has been discovered in sympa. The
last seen2020-06-01
modified2020-06-02
plugin id117620
published2018-09-21
reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/117620
titleDebian DLA-1512-1 : sympa security update
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1512-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(117620);
  script_version("1.2");
  script_cvs_date("Date: 2018/11/05  9:50:12");

  script_cve_id("CVE-2018-1000671");

  script_name(english:"Debian DLA-1512-1 : sympa 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:
"An Open Redirect vulnerability has been discovered in sympa. The
'referer' parameter of the wwsympa.fcgi login action can result in
Open redirection and potential Cross Site Scripting via data URIs.
This attack appear to be exploitable via Victim browser opening a
crafted URL supplied by the attacker.

For Debian 8 'Jessie', this problem has been fixed in version
6.1.23~dfsg-2+deb8u3.

We recommend that you upgrade your sympa 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/2018/09/msg00023.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/sympa"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected sympa package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:sympa");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/21");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 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:"8.0", prefix:"sympa", reference:"6.1.23~dfsg-2+deb8u3")) 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");

References