CVE-2019-17556 Deserialization of Untrusted Data in Apache Olingo
Attackers can execute arbitrary code by feeding malicious metadata to the AbstractService class in Apache Olingo due to unsafe deserialization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-17556?
CVE-2019-17556 is a critical unsafe deserialization 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
Apache Olingo versions 4.0.0 to 4.6.0 provide the AbstractService class, which is public API, uses ObjectInputStream and doesn't check classes being deserialized. If an attacker can feed malicious metadata to the class, then it may result in running attacker's code in the worse case.
Weakness: CWE-502
Which versions are affected by CVE-2019-17556?
2 open source packages ship an affected version, including org.apache.olingo:odata-client-proxy. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.olingo:odata-client-proxy Maven | From 4.0.0 | 4.7.0 |
org.apache.olingo:odata-client-proxy Maven | From 4.0.0 | 4.7.0 |
Products include Apache Olingo.
How do I fix CVE-2019-17556?
Upgrade org.apache.olingo:odata-client-proxy to 4.7.0 or later.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2019-17556 being exploited?
There is no known exploitation of CVE-2019-17556 in the wild and no public exploit code.
Other vulnerabilities in Apache Olingo
Sources
Also known as GHSA-gj76-429m-56wc.