CVE-2013-4088

Vulnerability

Kernel/Modules/AgentTicketWatcher.pm in Open Ticket Request System (OTRS) 3.0.x before 3.0.21, 3.1.x before 3.1.17, and 3.2.x before 3.2.8 does not properly verify permissions when using the ticket watch mechanism [1][2]. This allows an attacker with a valid agent login to read restricted tickets via a crafted URL involving the ticket split mechanism [2].

Exploitation

The attacker must have a valid agent login to the OTRS system [2]. By manipulating a URL in the ticket watch mechanism, the attacker can bypass permission checks and view tickets they are not authorized to see [1][2]. The exploit requires no additional privileges beyond a standard agent account.

Impact

Successful exploitation leads to unauthorized disclosure of ticket contents, including potentially sensitive information that should be restricted to the attacker's role [1][2]. The impact is limited to information disclosure; no modification or deletion of tickets is described.

Mitigation

Update to OTRS version 3.0.21, 3.1.17, or 3.2.8, which fix the permission check [1]. These versions were released by the vendor and are available from the OTRS website [1].