CVE-2022-31081

NameCVE-2022-31081
DescriptionHTTP::Daemon is a simple http server class written in perl. Versions prior to 6.15 are subject to a vulnerability which could potentially be exploited to gain privileged access to APIs or poison intermediate caches. It is uncertain how large the risks are, most Perl based applications are served on top of Nginx or Apache, not on the `HTTP::Daemon`. This library is commonly used for local development and tests. Users are advised to update to resolve this issue. Users unable to upgrade may add additional request handling logic as a mitigation. After calling `my $rqst = $conn->get_request()` one could inspect the returned `HTTP::Request` object. Querying the 'Content-Length' (`my $cl = $rqst->header('Content-Length')`) will show any abnormalities that should be dealt with by a `400` response. Expected strings of 'Content-Length' SHOULD consist of either a single non-negative integer, or, a comma separated repetition of that number. (that is `42` or `42, 42, 42`). Anything else MUST be rejected.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3127-1
Debian Bugs1014808

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libhttp-daemon-perl (PTS)buster6.01-3vulnerable
buster (security)6.01-3+deb10u1fixed
bullseye6.12-1+deb11u1fixed
sid, trixie, bookworm6.16-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libhttp-daemon-perlsourcebuster6.01-3+deb10u1DLA-3127-1
libhttp-daemon-perlsourcebullseye6.12-1+deb11u1
libhttp-daemon-perlsource(unstable)6.14-1.11014808

Notes

https://github.com/libwww-perl/HTTP-Daemon/security/advisories/GHSA-cg8c-pxmv-w7cf
Refactoring/renaming prerequisite: https://github.com/libwww-perl/HTTP-Daemon/commit/331d5c1d1f0e48e6b57ef738c2a8509b1eb53376
Fixed by: https://github.com/libwww-perl/HTTP-Daemon/commit/e84475de51d6fd7b29354a997413472a99db70b2
Fixed by: https://github.com/libwww-perl/HTTP-Daemon/commit/8dc5269d59e2d5d9eb1647d82c449ccd880f7fd0
Testcase: https://github.com/libwww-perl/HTTP-Daemon/commit/faebad54455c2c2919e234202362570925fb99d1

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