~ / search / GHSA-grg4-wf29-r9vv

GHSA-grg4-wf29-r9vv

Bzip2Decoder doesn't allow setting size restrictions for decompressed data

Source: GitHub Advisory Database (reviewed) High CVE-2021-37136

Packages

EcosystemPackageAffectedFixed in
Maven io.netty:netty-codec < 4.1.68.Final 4.1.68.Final
Maven org.jboss.netty:netty < 4.0.0 no fix listed
Maven io.netty:netty < 4.0.0 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack ### Workarounds No workarounds other than not using the `Bzip2Decoder` ### References Relevant code areas: https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L80 https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L294 https://github.com/netty/netty/blob/netty-4.1.67.Final/codec/src/main/java/io/netty/handler/codec/compression/Bzip2Decoder.java#L305

References

External links from the advisory. They lead to third-party sites.