CVE-2016-9471

low-risk
Published 2017-03-28

Revive Adserver before 3.2.5 and 4.0.0 suffers from Special Element Injection. Usernames weren't properly sanitised when creating users on a Revive Adserver instance. Especially, control characters were not filtered, allowing apparently identical usernames to co-exist in the system, due to the fact that such characters are normally ignored when an HTML page is displayed in a browser. The issue could have therefore been exploited for user spoofing, although elevated privileges are required to create users within Revive Adserver.

Do I need to act?

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0.27% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.1/10 Low
NETWORK / HIGH complexity

Affected Products (2)

Affected Vendors

Revive-Adserver

References (6)

Patch https://github.com/revive-adserver/revive-adserver/commit/05b1eceb
Permissions Required https://hackerone.com/reports/128181
Patch https://www.revive-adserver.com/security/revive-sa-2016-002/
Patch https://github.com/revive-adserver/revive-adserver/commit/05b1eceb
Permissions Required https://hackerone.com/reports/128181
Patch https://www.revive-adserver.com/security/revive-sa-2016-002/
19
/ 100
low-risk
Severity 11/34 · Low
Exploitability 1/34 · Minimal
Exposure 7/34 · Low