GHSA-wrvw-hg22-4m67 A potential Denial of Service issue in protobuf-java

• Maven com.google.protobuf:protobuf-java: < 3.16.1 → fixed in 3.16.1 • RubyGems google-protobuf: < 3.19.2 → fixed in 3.19.2 • Maven com.google.protobuf:protobuf-java: >= 3.18.0, < 3.18.2 → fixed in 3.18.2 • Maven com.google.protobuf:protobuf-java: >= 3.19.0, < 3.19.2 → fixed in 3.19.2 • Maven com.google.protobuf:protobuf-kotlin: >= 3.18.0, < 3.18.2 → fixed in 3.18.2 • Maven com.google.protobuf:protobuf-kotlin: >= 3.19.0, < 3.19.2 → fixed in 3.19.2

Summary A potential Denial of Service issue in protobuf-java was discovered in the parsing procedure for binary data. Reporter: 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 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)