6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
30.5%
According to its self-reported version, Cisco Webex Teams for Windows is affected by an dll injection vulnerability due to incorrect handling of directory paths at run time. An authenticated, local attacker can exploit this, by inserting a configuration file in a specific path in the system, to execute arbitrary code with the privileges of another user account.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(150848);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/21");
script_cve_id("CVE-2021-1536");
script_xref(name:"IAVA", value:"2021-A-0282");
script_xref(name:"CISCO-BUG-ID", value:"CSCvw48667");
script_xref(name:"CISCO-BUG-ID", value:"CSCvw79311");
script_xref(name:"CISCO-BUG-ID", value:"CSCvw79321");
script_xref(name:"CISCO-SA", value:"cisco-sa-webex-dll-inject-XNmcSGTU");
script_name(english:"Cisco Webex Teams for Windows DLL Injection (cisco-sa-webex-dll-inject-XNmcSGTU)");
script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch");
script_set_attribute(attribute:"description", value:
"According to its self-reported version, Cisco Webex Teams for Windows is affected by an dll injection vulnerability
due to incorrect handling of directory paths at run time. An authenticated, local attacker can exploit this, by
inserting a configuration file in a specific path in the system, to execute arbitrary code with the privileges of
another user account.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
# https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191120-webex-teams-dll
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b4213ada");
script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq87642");
script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in the vendor advisory.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-1536");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_cwe_id(427);
script_set_attribute(attribute:"vuln_publication_date", value:"2021/06/02");
script_set_attribute(attribute:"patch_publication_date", value:"2021/06/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/17");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:webex_teams");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("cisco_webex_teams_installed_win.nbin");
script_require_keys("SMB/Registry/Enumerated", "installed_sw/Webex Teams");
exit(0);
}
include('vcf.inc');
var app = 'Webex Teams';
var app_info = vcf::get_app_info(app:app, win_local:TRUE);
vcf::check_granularity(app_info:app_info, sig_segments:3);
var constraints = [
{'min_version': '0.0', 'fixed_version' :'41.3.0.18986' },
{'min_version': '41.4', 'fixed_version' : '41.4.0.18737' },
{'min_version': '41.5', 'fixed_version' : '41.5.0.18815' }
];
vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);
Vendor | Product | Version | CPE |
---|---|---|---|
cisco | webex_teams | cpe:/a:cisco:webex_teams |
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.001 Low
EPSS
Percentile
30.5%