CVE-2021-41616 Apache ddlutils 1.0 readobject vulnerability

What is CVE-2021-41616?

CVE-2021-41616 is a critical unsafe deserialization vulnerability in Apache DB ddlutils, published on 30 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Apache DB DdlUtils 1.0 included a BinaryObjectsHelper that was intended for use when migrating database data with a SQL data type of BINARY, VARBINARY, LONGVARBINARY, or BLOB between databases using the ddlutils features. The BinaryObjectsHelper class was insecure and used ObjectInputStream.readObject without validating that the input data was safe to deserialize. Please note that DdlUtils is no longer being actively developed. To address the insecurity of the BinaryObjectHelper class, the following changes to DdlUtils have been made: (1) BinaryObjectsHelper.java has been deleted from the DdlUtils source repository and the DdlUtils feature of propagating data of SQL binary types is therefore no longer present in DdlUtils; (2) The ddlutils-1.0 release has been removed from the Apache Release Distribution Infrastructure; (3) The DdlUtils web site has been updated to indicate that DdlUtils is now available only as source code, not as a packaged release.

Weakness: CWE-502

Which versions are affected by CVE-2021-41616?

2 open source packages ship an affected version, including org.apache.ddlutils:ddlutils. It affects 1 product.

Products include Apache Ddlutils.

How do I fix CVE-2021-41616?

No fix has been published for CVE-2021-41616 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2021-41616 being exploited?

There is no known exploitation of CVE-2021-41616 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-9378-f4v7-jgm4.