CVE-2006-2063 in Leadhound Full
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Leadhound Full and LITE 2.1, and probably the Network Version "Full Version", allow remote attackers to inject arbitrary web script or HTML via the login parameter in (1) agent_affil.pl, (2) agent_help.pl, (3) agent_faq.pl, (4) agent_help_insert.pl, (5) sign_out.pl, (6) members.pl, (7) modify_agent_1.pl, (8) modify_agent_2.pl, (9) modify_agent.pl, (10) agent_links.pl, (11) agent_stats_pending_leads.pl, (12) agent_logoff.pl, (13) agent_rev_det.pl, (14) agent_subaffiliates.pl, (15) agent_stats_pending_leads.pl, (16) agent_transactions.pl, (17) agent_payment_history.pl, (18) agent_summary.pl, (19) agent_camp_all.pl, (20) agent_camp_new.pl, (21) agent_camp_notsub.pl, (22) agent_campaign.pl, (23) agent_camp_expired.pl, (24) agent_stats_det.pl, (25) agent_stats.pl, (26) agent_camp_det.pl, (27) agent_camp_sub.pl, (28) agent_affil_list.pl, and (29) agent_affil_code.pl; the logged parameter in (30) agent_faq.pl, (31) agent_help_insert.pl, (32) members.pl, (33) modify_agent_1.pl, (34) modify_agent_2.pl, (35) modify_agent.pl, (36) agent_links.pl, (37) agent_subaffiliates.pl, (38) agent_stats_pending_leads.pl, (39) agent_transactions.pl, (40) agent_summary.pl, (41) agent_camp_all.pl, (42) agent_camp_new.pl, (43) agent_camp_notsub.pl, (44) agent_campaign.pl, (45) agent_camp_expired.pl, (46) agent_stats.pl, (47) agent_camp_det.pl, (48) agent_camp_sub.pl, (49) agent_affil_list.pl, and (50) agent_affil_code.pl; the camp_id parameter in (51) agent_links.pl, (52) agent_subaffiliates.pl, and (53) agent_camp_det.pl; the (54) banner parameter in agent_links.pl; the offset parameter in (55) agent_links.pl, (56) agent_subaffiliates.pl, (57) agent_transactions.pl, and (58) agent_summary.pl; the date parameter in (59) agent_subaffiliates.pl, (60) agent_transactions.pl, and (61) agent_summary.pl; the dates parameter in (62) agent_rev_det.pl and (63) agent_stats_det.pl; the (64) page parameter in agent_camp_det.pl; the (65) agent_id parameter in agent_commission_statement.pl; and the (66) lost password field in lost_pwd.pl.
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Analysis
by VulDB Data Team • 09/08/2017
This cross-site scripting vulnerability affects Leadhound Full and LITE 2.1 versions, with potential impact on the Network Version Full Version, presenting a significant security risk to web applications handling user authentication and administrative functions. The vulnerability stems from insufficient input validation and sanitization of user-supplied parameters across numerous server-side script files, creating multiple attack vectors that allow remote attackers to inject malicious scripts into web pages viewed by other users. The affected parameters include login, logged, camp_id, banner, offset, date, dates, page, agent_id, and lost password fields, all of which are processed without proper sanitization, enabling attackers to execute arbitrary web scripts or HTML code within the victim's browser context.
The technical flaw represents a classic XSS vulnerability categorized under CWE-79, which occurs when web applications fail to validate or sanitize user input before incorporating it into dynamic web content. This particular vulnerability affects 66 distinct script files within the Leadhound application, demonstrating a widespread code quality issue where input handling is inconsistently implemented across the entire application framework. The vulnerability is particularly dangerous because it affects both authentication-related scripts like agent_affil.pl and sign_out.pl, as well as administrative functions such as agent_stats.pl and agent_campaign.pl, providing attackers with extensive access to potentially sensitive user data and administrative capabilities.
The operational impact of this vulnerability extends beyond simple script injection, as it enables attackers to perform session hijacking, steal user credentials, redirect users to malicious sites, and potentially escalate privileges within the application. Attackers can exploit these vulnerabilities to create persistent malicious scripts that execute whenever legitimate users access affected pages, making the attack surface particularly dangerous for applications handling user accounts and administrative functions. The presence of multiple attack vectors across different parameter types increases the probability of successful exploitation and makes the vulnerability particularly challenging to defend against, as it requires comprehensive input validation across all affected endpoints.
Security professionals should implement comprehensive input sanitization and output encoding mechanisms to prevent XSS attacks in web applications. The recommended mitigations include implementing strict input validation using allowlists for all user-supplied parameters, implementing proper output encoding for all dynamic content, and employing Content Security Policy headers to limit script execution. Additionally, regular security code reviews and automated vulnerability scanning should be conducted to identify similar issues in other application components. This vulnerability aligns with ATT&CK technique T1059.001 for command and script injection, and T1566 for credential access through social engineering. Organizations should also consider implementing web application firewalls and regular security training for developers to prevent similar issues in future application development cycles. The vulnerability demonstrates the critical importance of consistent security practices across all application components and the necessity of thorough input validation throughout the entire application architecture.