CVE-2018-1000809 privacyIDEA Improper Input Validation vulnerability
An attacker can cause a Denial-of-Service in privacyIDEA by sending a specific HTTP request to the token validation API.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-1000809?
CVE-2018-1000809 is a high-severity denial of service vulnerability in n/a, published on 8 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
privacyIDEA version 2.23.1 and earlier contains a Improper Input Validation vulnerability in token validation api that can result in Denial-of-Service. This attack appear to be exploitable via http request with user=<space>&pass= to /validate/check url. This vulnerability appears to have been fixed in 2.23.2.
Weakness: CWE-20
Which versions are affected by CVE-2018-1000809?
3 open source packages ship an affected version, including privacyidea and privacyIDEA. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
privacyidea PyPI | All versions | 2.23.2 |
privacyidea PyPI | All versions | 2.23.2 |
privacyIDEA PyPI | All versions | 2.23.2 |
Products include Privacyidea Privacyidea.
How do I fix CVE-2018-1000809?
Upgrade privacyidea to 2.23.2 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-1000809 being exploited?
There is no known exploitation of CVE-2018-1000809 in the wild and no public exploit code.
Sources
Also known as GHSA-7qqv-r2q4-jxhm, PYSEC-2018-20.