Advisory Weakness Curation

## Summary A potential Denial of Service issue in protobuf-java was discovered in the parsing procedure for binary data. Reporter: OSS-Fuzz https://github.com/google/oss-fuzz Affected versions: All versions of Java Protobufs (including Kotlin and JRuby) prior to the versions listed below. Protobuf "javalite" users (typically Android) are not affected. ## Severity CVE-2021-22569 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22569 **High** - CVSS Score: 7.5, An implementation weakness in how unknown fields are parsed in Java. A small (~800 KB) malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated GC pauses. ## Proof of Concept For reproduction details, please refer to the oss-fuzz issue that identifies the specific inputs that exercise this parsing weakness. ## Remediation and Mitigation Please update to the latest available versions of the following packages: - protobuf-java (3.16.1, 3.18.2, 3.19.2) - protobuf-kotlin (3.18.2, 3.19.2) - google-protobuf [JRuby gem only] (3.19.2)

Denial of Service An issue in protobuf-java (JRuby gem) allowed the interleaving of `com.google.protobuf.UnknownFieldSet` fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.

Duplicate This advisory duplicates another.

Denial of Service An issue in protobuf-java allowed the interleaving of `com.google.protobuf.UnknownFieldSet` fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.

Duplicate This advisory duplicates another.

Denial Of Service An issue in protobuf-java allowed the interleaving of `com.google.protobuf.UnknownFieldSet` fields in such a way that would be processed out of order. A small malicious payload can occupy the parser for several minutes by creating large numbers of short-lived objects that cause frequent, repeated pauses. We recommend upgrading libraries beyond the vulnerable versions.

Duplicate This advisory duplicates another.