Cisco Webex Meeting Center

A vulnerability in web interface of the Cisco Webex Event Center, Cisco Webex Meeting Center, Cisco Webex Support Center, and Cisco Webex Training Center could allow an unauthenticated, remote attacker to guess account usernames. The vulnerability is due to missing CAPTCHA protection in certain URLs. An attacker could exploit this vulnerability by sending a crafted request to the web interface. A successful exploit could allow the attacker to know if a given username is valid and find the real name of the user.

A vulnerability in Cisco WebEx Meeting Center could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of an affected system. The vulnerability is due to insufficient input validation of some parameters that are passed to the web server of the affected system. An attacker could exploit this vulnerability by convincing a user to follow a malicious link or by intercepting a user request and injecting malicious code into the request. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected web interface or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCvf78635,, CSCvg52440.

A vulnerability in Cisco WebEx Event Center could allow an authenticated, remote attacker to view unlisted meeting information. The vulnerability is due to a design flaw in the product. An attacker could execute a query on an Event Center site to view scheduled meetings. A successful query would show both listed and unlisted meetings in the displayed information. An attacker could use this information to attend meetings that are not available for their attendance. Cisco Bug IDs: CSCvg33629.

A vulnerability in Cisco WebEx Network Recording Player for WebEx Recording Format (WRF) files could allow an attacker to cause a denial of service (DoS) condition. An attacker could exploit this vulnerability by providing a user with a malicious WRF file via email or URL and convincing the user to open the file. A successful exploit could cause an affected player to crash, resulting in a DoS condition. This vulnerability affects Cisco WebEx Business Suite meeting sites, Cisco WebEx Meetings sites, and Cisco WebEx WRF players. Cisco Bug IDs: CSCve30294, CSCve30301.

A Buffer Overflow vulnerability in Cisco WebEx Network Recording Player for Advanced Recording Format (.arf) files could allow an attacker to execute arbitrary code on a system. An attacker could exploit this vulnerability by providing a user with a malicious .arf file via email or URL and convincing the user to launch the file. Exploitation of this vulnerability could allow arbitrary code execution on the system of the targeted user. This vulnerability affects Cisco WebEx Business Suite meeting sites, Cisco WebEx Meetings sites, Cisco WebEx Meetings Server, and Cisco WebEx ARF players. Cisco Bug IDs: CSCve10729, CSCve10771, CSCve10779, CSCve11521, CSCve11543.

A vulnerability in Cisco WebEx Meeting Center could allow an authenticated, remote attacker to initiate connections to arbitrary hosts, aka a "URL Redirection Vulnerability." The vulnerability is due to insufficient access control for HTTP traffic directed to the Cisco WebEx Meeting Center. An attacker could exploit this vulnerability by sending a malicious URL to the Cisco WebEx Meeting Center. An exploit could allow the attacker to connect to arbitrary hosts. Cisco Bug IDs: CSCvf63843.

A vulnerability in Cisco WebEx Meeting Center could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of an affected system. The vulnerability is due to insufficient input validation of some parameters that are passed to the web server of the affected system. An attacker could exploit this vulnerability by convincing a user to follow a malicious link or by intercepting a user request and injecting malicious code into the request. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected web interface or allow the attacker to access sensitive browser-based information. Cisco Bug IDs: CSCvf78615, CSCvf78628.

A vulnerability in the web interface of Cisco Jabber could allow an authenticated, local attacker to retrieve user profile information from the affected software, which could lead to the disclosure of confidential information. The vulnerability is due to a lack of input and validation checks in the affected software. An attacker could exploit this vulnerability by authenticating locally to an affected system and then issuing specific commands to the affected software. A successful exploit could allow the attacker to view all profile information for a user instead of only certain Jabber parameters that should be visible. This vulnerability affects all releases of Cisco Jabber prior to Release 1.9.31. Cisco Bug IDs: CSCve52418.

A vulnerability in Cisco WebEx browser extensions for Google Chrome and Mozilla Firefox could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system. This vulnerability affects the browser extensions for Cisco WebEx Meetings Server, Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center), and Cisco WebEx Meetings when they are running on Microsoft Windows. The vulnerability is due to a design defect in the extension. An attacker who can convince an affected user to visit an attacker-controlled web page or follow an attacker-supplied link with an affected browser could exploit the vulnerability. If successful, the attacker could execute arbitrary code with the privileges of the affected browser. The following versions of the Cisco WebEx browser extensions are affected: Versions prior to 1.0.12 of the Cisco WebEx extension on Google Chrome, Versions prior to 1.0.12 of the Cisco WebEx extension on Mozilla Firefox. Cisco Bug IDs: CSCvf15012 CSCvf15020 CSCvf15030 CSCvf15033 CSCvf15036 CSCvf15037.

An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Container before 106 on Mozilla Firefox, the GpcContainer Class ActiveX control plugin before 10031.6.2017.0126 on Internet Explorer, and the Download Manager ActiveX control plugin before 2.1.0.10 on Internet Explorer. A vulnerability in these Cisco WebEx browser extensions could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the affected browser on an affected system. This vulnerability affects the browser extensions for Cisco WebEx Meetings Server and Cisco WebEx Centers (Meeting Center, Event Center, Training Center, and Support Center) when they are running on Microsoft Windows. The vulnerability is a design defect in an application programing interface (API) response parser within the extension. An attacker that can convince an affected user to visit an attacker-controlled web page or follow an attacker-supplied link with an affected browser could exploit the vulnerability. If successful, the attacker could execute arbitrary code with the privileges of the affected browser.

A vulnerability in a URL parameter of Cisco WebEx Meeting Center could allow an unauthenticated, remote attacker to perform site redirection. More Information: CSCzu78401. Known Affected Releases: T28.1.

Cisco WebEx Meeting Center Original Release Base allows remote attackers to obtain sensitive information about username validity by (1) attending or (2) hosting a meeting, aka Bug ID CSCux84312.

The encryption-processing feature in Cisco libSRTP before 1.5.3 allows remote attackers to cause a denial of service via crafted fields in SRTP packets, aka Bug ID CSCux00686.

Cisco WebEx Meeting Center allows remote attackers to obtain sensitive information via unspecified vectors, as demonstrated by discovering credentials, aka Bug ID CSCut17466.

Cisco WebEx Meeting Center does not properly restrict the content of URLs in GET requests, which allows remote attackers to obtain sensitive information or conduct SQL injection attacks via vectors involving read access to a request, aka Bug ID CSCup88398.

Cross-site scripting (XSS) vulnerability in Cisco WebEx Meeting Center allows remote attackers to inject arbitrary web script or HTML via a crafted URL, aka Bug ID CSCur03806.

Cisco WebEx Meeting Center does not properly determine authorization for reading a host calendar, which allows remote attackers to obtain sensitive information by obtaining a list of all meetings and then sending a calendar request for each one, aka Bug ID CSCur23913.

Cisco WebEx Meeting Center places a meeting's access number in a URL, which allows remote attackers to obtain sensitive information and bypass intended attendance restrictions by visiting a meeting-registration page, aka Bug ID CSCus62147.

The web-based administrative interface in Cisco WebEx Meeting Center provides different error messages for failed login attempts depending on whether the username exists or corresponds to a privileged account, which allows remote attackers to enumerate account names and obtain sensitive information via a series of requests, aka Bug ID CSCuf28861.

Cisco WebEx Meeting Center allows remote attackers to activate disabled meeting attributes, and consequently obtain sensitive information, by providing crafted parameters during a meeting-join action, aka Bug ID CSCuo34165.

Cisco WebEx Meeting Center does not properly restrict the content of URLs, which allows remote attackers to obtain sensitive information via vectors related to file: URIs, aka Bug ID CSCus18281.

Heap-based buffer overflow in the file-sharing feature in WebEx Meetings Client in Cisco WebEx Meetings Server and WebEx Meeting Center allows remote attackers to execute arbitrary code via crafted data, aka Bug IDs CSCup62463 and CSCup58467.

The File Transfer feature in WebEx Meetings Client in Cisco WebEx Meetings Server and WebEx Meeting Center does not verify that a requested file was an offered file, which allows remote attackers to read arbitrary files via a modified request, aka Bug IDs CSCup62442 and CSCup58463.

meetinginfo.do in Cisco WebEx Event Center, WebEx Meeting Center, WebEx Sales Center, WebEx Training Center, WebEx Meetings Server 1.5(.1.131) and earlier, and WebEx Business Suite (WBS) 27 before 27.32.31.16, 28 before 28.12.13.18, and 29 before 29.5.1.12 allows remote attackers to obtain sensitive meeting information by leveraging knowledge of a meeting identifier, aka Bug IDs CSCuo68624 and CSCue46738.

WebEx Meeting Center in Cisco WebEx Business Suite does not properly compose URLs for HTTP GET requests, which allows remote attackers to obtain sensitive information by reading (1) web-server access logs, (2) web-server Referer logs, or (3) a browser's history, aka Bug ID CSCul98272.