The Asterisk project reports :
When handling a WebSocket frame the res_http_websocket module dynamically changes the size of the memory used to allow the provided payload to fit. If a payload length of zero was received the code would incorrectly attempt to resize to zero. This operation would succeed and end up freeing the memory but be treated as a failure.
When the session was subsequently torn down this memory would get freed yet again causing a crash.
Users of the WebSocket functionality also did not take into account that provided text frames are not guaranteed to be NULL terminated.
This has been fixed in chan_sip and chan_pjsip in the applicable versions.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
# copyright notice, this list of conditions and the following
# disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
# published online in any format, converted to PDF, PostScript,
# RTF and other formats) must reproduce the above copyright
# notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(79956);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2014-9374");
script_name(english:"FreeBSD : asterisk -- Remote Crash Vulnerability in WebSocket Server (94268da0-8118-11e4-a180-001999f8d30b)");
script_summary(english:"Checks for updated package in pkg_info output");
script_set_attribute(
attribute:"synopsis",
value:"The remote FreeBSD host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"The Asterisk project reports :
When handling a WebSocket frame the res_http_websocket module
dynamically changes the size of the memory used to allow the provided
payload to fit. If a payload length of zero was received the code
would incorrectly attempt to resize to zero. This operation would
succeed and end up freeing the memory but be treated as a failure.
When the session was subsequently torn down this memory would get
freed yet again causing a crash.
Users of the WebSocket functionality also did not take into account
that provided text frames are not guaranteed to be NULL terminated.
This has been fixed in chan_sip and chan_pjsip in the applicable
versions."
);
script_set_attribute(
attribute:"see_also",
value:"http://downloads.asterisk.org/pub/security/AST-2014-019.html"
);
# https://vuxml.freebsd.org/freebsd/94268da0-8118-11e4-a180-001999f8d30b.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?b57cf33c"
);
script_set_attribute(attribute:"solution", value:"Update the affected package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:asterisk11");
script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
script_set_attribute(attribute:"vuln_publication_date", value:"2014/10/30");
script_set_attribute(attribute:"patch_publication_date", value:"2014/12/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/12/15");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2014-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"FreeBSD Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");
exit(0);
}
include("audit.inc");
include("freebsd_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (pkg_test(save_report:TRUE, pkg:"asterisk11<11.14.2")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
freebsd | freebsd | asterisk11 | p-cpe:/a:freebsd:freebsd:asterisk11 |
freebsd | freebsd | cpe:/o:freebsd:freebsd |