Vigil@nce - mod_auth_mellon: open redirect via Login ReturnTo
December 2019 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2
SYNTHESIS OF THE VULNERABILITY
An attacker can deceive the user via Login ReturnTo of mod_auth_mellon, in order to redirect him to a malicious site. Impacted products: Fedora.
Consequences: user access/rights, data reading.
Provenance: internet client.
Confidence: confirmed by the editor (5/5).
Creation date: 28/11/2019.
DESCRIPTION OF THE VULNERABILITY
The mod_auth_mellon product offers a web service.
However, the web service accepts to redirect the victim with no warning, to an external site indicated by the attacker.
An attacker can therefore deceive the user via Login ReturnTo of mod_auth_mellon, in order to redirect him to a malicious site.
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