Permalink Injection and Open Redirect Vulnerability in MantisBT

CVE-2017-7620 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

MantisBT before 1.3.11, 2.x before 2.3.3, and 2.4.x before 2.4.1 omits a backslash check in string_api.php and consequently has conflicting interpretations of an initial \/ substring as introducing either a local pathname or a remote hostname, which leads to (1) arbitrary Permalink Injection via CSRF attacks on a permalink_page.php?url= URI and (2) an open redirect via a login_page.php?return= URI.

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