Bug#1014769: netty: CVE-2021-37136 CVE-2021-37137

[Moritz Mühlenhoff]

Source: netty
X-Debbugs-CC: team at security.debian.org
Severity: important
Tags: security

Hi,

The following vulnerabilities were published for netty.

CVE-2021-37136[0]:
| 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

https://github.com/netty/netty/security/advisories/GHSA-grg4-wf29-r9vv
Fixed by: https://github.com/netty/netty/commit/41d3d61a61608f2223bb364955ab2045dd5e4020 (netty-4.1.68.Final)

CVE-2021-37137[1]:
| The Snappy frame decoder function doesn't restrict the chunk length
| which may lead to excessive memory usage. Beside this it also may
| buffer reserved skippable chunks until the whole chunk was received
| which may lead to excessive memory usage as well. This vulnerability
| can be triggered by supplying malicious input that decompresses to a
| very big size (via a network stream or a file) or by sending a huge
| skippable chunk.

https://github.com/netty/netty/security/advisories/GHSA-9vjp-v76f-g363
Fixed by: https://github.com/netty/netty/commit/6da4956b31023ae967451e1d94ff51a746a9194f (netty-4.1.68.Final)

If you fix the vulnerabilities please also make sure to include the
CVE (Common Vulnerabilities & Exposures) ids in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-37136
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37136
[1] https://security-tracker.debian.org/tracker/CVE-2021-37137
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37137

Please adjust the affected versions in the BTS as needed.