CVE-2011-4670
Multiple cross-site scripting (XSS) vulnerabilities in vTiger CRM 5.2.1 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) viewname parameter in a CalendarAjax action, (2) activity_mode parameter in a DetailView action, (3) contact_id and (4) parent_id parameters in an EditView action, (5) day, (6) month, (7) subtab, (8) view, and (9) viewOption parameters in the index action, and (10) start parameter in the ListView action to the Calendar module; (11) return_action and (12) return_module parameters in the EditView action, and (13) query parameter in an index action to the Campaigns module; (14) return_url and (15) workflow_id parameters in an editworkflow action to the com_vtiger_workflow module; (16) display_view parameter in an index action to the Dashboard module; (17) closingdate_end, (18) closingdate_start, (19) date_closed, (20) owner, (21) leadsource, (22) sales_stage, and (23) type parameters in a ListView action to the Potentials module; (24) folderid parameter in a SaveandRun action to the Reports module; (25) returnaction and (26) groupId parameters in a createnewgroup action, (27) mode and (28) parent parameters in a createrole action, (29) src_module in a ModuleManager action, (30) mode and (31) profile_id parameters in a profilePrivileges action, and (32) roleid parameter in a RoleDetailView to the Settings module; and (33) action parameter to the Home module and (34) module parameter to phprint.php.
| Software | From | Fixed in |
|---|---|---|
| vtiger / vtiger_crm | - | 5.2.1.x |
- http://osvdb.org/76005
- http://osvdb.org/76006
- http://seclists.org/fulldisclosure/2011/Oct/154
- http://www.securityfocus.com/archive/1/519993/100/0/threaded
- http://www.securityfocus.com/bid/49927
- http://yehg.net/lab/pr0js/advisories/%5BvTiger_5.2.1%5D_XSS
- https://exchange.xforce.ibmcloud.com/vulnerabilities/70306
- https://www.exploit-db.com/exploits/36203/
- https://www.exploit-db.com/exploits/36204/
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A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
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