An issue was discovered in Open Ticket Request System (OTRS) 6.0.x before 6.0.12. An attacker could send an e-mail message with a malicious link to an OTRS system or an agent. If a logged-in agent opens this link, it could cause the execution of JavaScript in the context of OTRS.

Specially crafted string in OTRS system configuration can allow the execution of any system command.

When OTRS uses multiple backends for user authentication (with LDAP), agents are able to login even if the account is set to invalid. This issue affects OTRS; 8.0.9 and prior versions.

An issue was discovered in Open Ticket Request System (OTRS) 6.0.x through 6.0.7. A carefully constructed email could be used to inject and execute arbitrary stylesheet or JavaScript code in a logged in customer's browser in the context of the OTRS customer panel application.

An issue was discovered in Open Ticket Request System (OTRS) 7.0.x through 7.0.8, Community Edition 6.0.x through 6.0.19, and Community Edition 5.0.x through 5.0.36. In the customer or external frontend, personal information of agents (e.g., Name and mail address) can be disclosed in external notes.

An issue was discovered in Open Ticket Request System (OTRS) 5.x through 5.0.34, 6.x through 6.0.17, and 7.x through 7.0.6. An attacker who is logged into OTRS as an agent user with appropriate permissions may try to import carefully crafted Report Statistics XML that will result in reading of arbitrary files on the OTRS filesystem.

An issue was discovered in Open Ticket Request System (OTRS) 7.x through 7.0.6 and Community Edition 5.0.x through 5.0.35 and 6.0.x through 6.0.17. An attacker who is logged into OTRS as an agent user with appropriate permissions may manipulate the URL to cause execution of JavaScript in the context of OTRS.

An issue was discovered in Open Ticket Request System (OTRS) 7.x through 7.0.6, Community Edition 6.0.x through 6.0.17, and OTRSAppointmentCalendar 5.0.x through 5.0.12. An attacker who is logged into OTRS as an agent with appropriate permissions may create a carefully crafted calendar appointment in order to cause execution of JavaScript in the context of OTRS.

An issue was discovered in Open Ticket Request System (OTRS) 5.x before 5.0.34, 6.x before 6.0.16, and 7.x before 7.0.4. An attacker who is logged into OTRS as an agent or a customer user may upload a carefully crafted resource in order to cause execution of JavaScript in the context of OTRS. This is related to Content-type mishandling in Kernel/Modules/PictureUpload.pm.

An issue was discovered in Open Ticket Request System (OTRS) 6.x before 6.0.17 and 7.x before 7.0.5. An attacker who is logged into OTRS as an admin user may manipulate the URL to cause execution of JavaScript in the context of OTRS. This is related to Kernel/Output/Template/Document.pm.

An issue was discovered in OTRS 6.0.x before 6.0.7. An attacker who is logged into OTRS as a customer can use the ticket overview screen to disclose internal article information of their customer tickets.

In the Admin Package Manager in Open Ticket Request System (OTRS) 5.0.0 through 5.0.24 and 6.0.0 through 6.0.1, authenticated admins are able to exploit a Blind Remote Code Execution vulnerability by loading a crafted opm file with an embedded CodeInstall element to execute a command on the server during package installation. NOTE: the vendor disputes this issue stating "the behaviour is as designed and needed for different packages to be installed", "there is a security warning if the package is not verified by OTRS Group", and "there is the possibility and responsibility of an admin to check packages before installation which is possible as they are not binary.

Open Ticket Request System (OTRS) 4.0.x before 4.0.28, 5.0.x before 5.0.26, and 6.0.x before 6.0.3, when cookie support is disabled, might allow remote attackers to hijack web sessions and consequently gain privileges via a crafted email.

In Open Ticket Request System (OTRS) through 3.3.20, 4 through 4.0.26, 5 through 5.0.24, and 6 through 6.0.1, an attacker who is logged in as a customer can use the ticket search form to disclose internal article information of their customer tickets.

In OTRS 6.0.x up to and including 6.0.1, OTRS 5.0.x up to and including 5.0.24, and OTRS 4.0.x up to and including 4.0.26, an attacker who is logged into OTRS as an agent can manipulate form parameters (related to PGP) and execute arbitrary shell commands with the permissions of the OTRS or web server user.

The iPhoneHandle package 0.9.x before 0.9.7 and 1.0.x before 1.0.3 in Open Ticket Request System (OTRS) does not properly restrict use of the iPhoneHandle interface, which allows remote authenticated users to gain privileges, and consequently read or modify OTRS core objects, via unspecified vectors.