CVE-2019-17555 Improper input validation in Apache Olingo
A malicious server can cause a denial of service in Apache Olingo by sending a large Retry-After header value that triggers an excessive thread sleep.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-17555?
CVE-2019-17555 is a high-severity denial of service vulnerability in Apache Olingo, published on 4 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The AsyncResponseWrapperImpl class in Apache Olingo versions 4.0.0 to 4.6.0 reads the Retry-After header and passes it to the Thread.sleep() method without any check. If a malicious server returns a huge value in the header, then it can help to implement a DoS attack.
Weakness: CWE-20
Which versions are affected by CVE-2019-17555?
2 open source packages ship an affected version, including org.apache.olingo:odata-client-core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.olingo:odata-client-core Maven | From 4.0.0 | 4.7.0 |
org.apache.olingo:odata-client-core Maven | From 4.0.0 | 4.7.0 |
Products include Apache Olingo.
How do I fix CVE-2019-17555?
Upgrade org.apache.olingo:odata-client-core to 4.7.0 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-2019-17555 being exploited?
There is no known exploitation of CVE-2019-17555 in the wild and no public exploit code.
Other vulnerabilities in Apache Olingo
Sources
Also known as GHSA-477x-w7m6-c6ph.