This email proposes upgrading the llhttp package in EPEL9 from 8.1.1 to
9.1.3, 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 python-aiohttp prior to 3.8.6[2] are affected by
CVE-2023-47627[3][4], an HTTP request/response smuggling vulnerability
rated 5.3 in CVSS v3 and rated Moderate by Red Hat. This was reported as
RHBZ#2249825[5]. Since the flaw is only in the pure-Python parser, and
we compile the llhttp-based parser, this affects only code using the
AIOHTTP_NO_EXTENSIONS environment variable. Updating aiohttp from 3.8.5
to 3.8.6 to fix that still requires updating llhttp from 8.x to 9.x.
Additionally, according to the release notes this includes an
llhttp-related security fix[6] with no assigned CVE, which provides
added motivation to update.
The ABI break in llhttp would only affect python-aiohttp. The
python-aiohttp update itself is compatible (by upstream intent, and as
already demonstrated in Rawhide and F39/F38); and a large list of
packages that depend on python-aiohttp would benefit from the fix. The
necessary rebuild would be conducted in a side tag.
The same incompatible update was approved by FESCo for Fedora 38 and
39[7]. Furthermore, it appears that FESCo will approve a permanent
exception for llhttp[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://github.com/aio-libs/aiohttp/releases/tag/v3.8.6
[3] https://access.redhat.com/security/cve/CVE-2023-47627
[4]
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-gfw2-4jvh-wgfg
[5] https://bugzilla.redhat.com/show_bug.cgi?id=2249825
[6] https://github.com/aio-libs/aiohttp/releases/tag/v3.8.6
[7] https://pagure.io/fesco/issue/3106
[8] https://pagure.io/fesco/issue/3115
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