On Tue, Aug 8, 2023 at 4:11 PM Ben Beasley <c...@musicinmybrain.net> wrote:

> This email proposes upgrading the llhttp package in EPEL9 from 6.0.10 to
> 8.1.1, which would break the ABI and bump the SONAME version, under the
> EPEL Incompatible Upgrades Policy[1].
>
> The llhttp package is a C library (transpiled from TypeScript) that
> provides the low-level HTTP support for NodeJS and for python-aiohttp.
> Currently, only python-aiohttp depends on the llhttp package in EPEL9.
>
> Versions of llhttp prior to 8.1.1 are affected by CVE-2023-30589[2], an
> HTTP request smuggling vulnerability rated 7.7 HIGH in CVSS v3 and rated
> Moderate by Red Hat. The GitHub advisory for llhttp is
> GHSA-cggh-pq45-6h9x[3]; the advisory for python-aiohttp is
> GHSA-45c4-8wx5-qw6w[4]. Upstream for python-aiohttp fixed this by
> updating llhttp (which they bundle, but we unbundle) in release 3.8.5.
>
> I am not comfortable attempting to backport the fix to an older release
> of llhttp. My preferred solution would be to update llhttp to 8.1.1[5]
> and (in the same side tag) update python-aiohttp to 3.8.5[6]. The ABI
> break in llhttp would only affect python-aiohttp; the python-aiohttp
> update itself is compatible (by upstream intent, and verified in
> COPR[7]); and a number of packages that depend on python-aiohttp would
> benefit from the fix.
>
> If this exception request is not approved, my fallback plan is to
> propose rebuilding python-aiohttp in EPEL9 with AIOHTTP_NO_EXTENSIONS=1,
> which would convert it to a pure-Python package. This is a documented
> mitigation, but comes with potentially serious performance regressions,
> again affecting a number of dependent packages. The llhttp package would
> become a leaf package and would remain unpatched.
>
> The same incompatible update was approved by FESCo for Fedora 37[8].
>
> The purpose of this email is to document and explain the proposed
> update, to begin the minimum one-week discussion period mandated by the
> EPEL Incompatible Upgrades Policy, and to request that the update be
> added to the agenda for an upcoming EPEL meeting.
>
> [1]
>
> https://docs.fedoraproject.org/en-US/epel/epel-policy-incompatible-upgrades/#process_for_incompatible_upgrades
>
> [2] https://access.redhat.com/security/cve/CVE-2023-30589
>
> [3] https://github.com/advisories/GHSA-cggh-pq45-6h9x
>
> [4]
> https://github.com/aio-libs/aiohttp/security/advisories/GHSA-45c4-8wx5-qw6w
>
> [5] https://src.fedoraproject.org/rpms/llhttp/pull-request/14
>
> [6] https://src.fedoraproject.org/rpms/python-aiohttp/pull-request/26
>
> [7] https://copr.fedorainfracloud.org/coprs/music/aiohttp-epel9/packages/
>
> [8] https://pagure.io/fesco/issue/3049


Thank you for the nice write-up.

I have created an EPEL issue.  Not really for discussion but more for
voting and make sure this is on the meeting agendas.
https://pagure.io/epel/issue/241

Troy
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