CVE-2020-7238

NameCVE-2020-7238
DescriptionNetty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2109-1, DLA-2110-1
NVD severitymedium
Debian Bugs950967

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
netty (PTS)stretch (security), stretch1:4.1.7-2+deb9u1vulnerable
buster, buster (security)1:4.1.33-1+deb10u1vulnerable
bullseye, sid1:4.1.48-1fixed
netty-3.9 (PTS)stretch3.9.9.Final-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nettysourcejessie1:3.2.6.Final-2+deb8u2DLA-2109-1
nettysource(unstable)1:4.1.45-1950967
netty-3.9sourcejessie3.9.0.Final-1+deb8u1DLA-2110-1
netty-3.9sourcestretch(not affected)
netty-3.9source(unstable)(unfixed)

Notes

[stretch] - netty-3.9 <not-affected> (CVE-2019-16869 not fixed for stretch)
https://bugzilla.redhat.com/show_bug.cgi?id=1796225
https://github.com/jdordonezn/CVE-2020-72381/issues/1
Issue exists because of incomplete fix for CVE-2019-16869.
https://github.com/netty/netty/issues/9861#issuecomment-582307539 (same fix as CVE-2019-20445)

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