CVE-2019-9518

NameCVE-2019-9518
DescriptionSome HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4520-1
Debian Bugs935314

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
trafficserver (PTS)buster (security), buster, buster (lts)8.1.7-0+deb10u4fixed
bullseye8.1.10+ds-1~deb11u1fixed
bullseye (security)8.1.11+ds-0+deb11u1fixed
bookworm (security), bookworm9.2.5+ds-0+deb12u1fixed
sid9.2.5+ds-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
trafficserversourcewheezy(unfixed)end-of-life
trafficserversourcebuster8.0.2+ds-1+deb10u1DSA-4520-1
trafficserversource(unstable)8.0.5+ds-1935314

Notes

https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
https://github.com/apache/trafficserver/pull/5850
https://github.com/apache/trafficserver/blob/8.0.x/CHANGELOG-8.0.5

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