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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXdncGotN2Myai12Zmpt

Indico Tampering with links (e.g. password reset) in sent emails


An external audit of the Indico codebase has discovered a vulnerability in Indico's URL generation logic which could have allowed an attacker to make Indico send a password reset link with a valid token pointing to an attacker-controlled domain by sending that domain in the Host header. Had a user clicked such a link without realizing it does not point to Indico (and that they never requested it), it would have revealed their password reset token to the attacker, allowing them to reset the password for that user and thus take over their Indico account.


You need to update to Indico 2.3.4 as soon as possible. See the docs for instructions on how to update.


You can configure the web server to canonicalize the URL to the hostname used for Indico. See this commit for the changes in our setup docs; they can be easily applied to your existing web server config.

For more information

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Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: 23 days ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Identifiers: GHSA-wgpj-7c2j-vfjm, CVE-2021-30185

Affected Packages

Versions: < 2.3.4
Fixed in: 2.3.4