CVE-2021-21407
About
Combodo iTop is an open source, web based IT Service Management tool. Prior to version 2.7.4, the CSRF token validation can be bypassed through iTop portal via a tricky browser procedure. The vulnerability is patched in version 2.7.4 and 3.0.0.
Rainforest analyst review
Combodo iTop's CSRF-token validation can be bypassed through a specific browser procedure, letting an attacker forge requests that a logged-in user's browser carries out. The vector requires user interaction, so the play is luring an authenticated iTop user into a booby-trapped action, with high confidentiality and integrity impact if it lands.
Because it depends on a logged-in victim being enticed, this leans toward a targeted, social-engineering-driven attack rather than something automated at scale. In an ITSM tool, though, forged actions in an authenticated context can be consequential, changing records or state on the victim's behalf.
We treat this as moderate and prioritize with the interaction precondition in mind. The practical steps are inventorying iTop versions against the fixed 2.7.4 and 3.0.0 releases and considering detection of the anomalous request pattern, while noting that the need for a lured, authenticated victim caps the realistic exploitation rate.
References
Related CVEs
Frequently asked questions
What is CVE-2021-21407?
Combodo iTop is an open source, web based IT Service Management tool. Prior to version 2.7.4, the CSRF token validation can be bypassed through iTop portal via a tricky browser procedure. The vulnerability is patched in version 2.7.4 and 3.0.0.
How severe is CVE-2021-21407?
CVE-2021-21407 carries a CVSS 3.1 base score of 8, rated high. On the Rainforest Risk Index — which weighs the severity alongside how easy the flaw is to reach and how broad its impact is — it scores 83 out of 100, in the high band.
How is CVE-2021-21407 exploited?
According to the CVSS vector (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N): attack vector Network, attack complexity High, privileges required None, user interaction Required. Impact on confidentiality High, integrity High and availability None.
Which products are affected by CVE-2021-21407?
Public advisories list the following as affected: itop. Check the references on this page for the exact versions each vendor confirms.
How do I fix CVE-2021-21407?
Apply the fix the vendor published — the references on this page link to the primary advisories and patches. When patching can't happen right away, reduce the exposure of the affected component and watch it for exploitation attempts. Rainforest customers see this vulnerability correlated to their own assets and prioritized by real exposure, not by score alone.
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