Vulnerability · Published Jun 27, 2022 · Assigned by GitHub_M
CVE-2022-31081Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in HTTP::Daemon
High 7.3
In plain English
A high-severity security flaw in HTTP-Daemon from libwww-perl. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
HTTP::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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libhttp-daemon-perl | 6.14-1.1 | DEBIAN-CVE-2022-31081 |
| Debian:13 | libhttp-daemon-perl | 6.14-1.1 | DEBIAN-CVE-2022-31081 |
| Debian:14 | libhttp-daemon-perl | 6.14-1.1 | DEBIAN-CVE-2022-31081 |
| Ubuntu:22.04:LTS | libhttp-daemon-perl | 6.13-1ubuntu0.1 | USN-5520-1 |
| Ubuntu:22.04:LTS | libhttp-daemon-perl | 6.13-1ubuntu0.1 | UBUNTU-CVE-2022-31081 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| libwww-perl | HTTP-Daemon | < 6.15 |
Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://portswigger.net/research/http-desync-attacks-request-smuggling-reborn
- https://github.com/libwww-perl/HTTP-Daemon/security/advisories/GHSA-cg8c-pxmv-w7cf
- https://github.com/libwww-perl/HTTP-Daemon/commit/8dc5269d59e2d5d9eb1647d82c449ccd880f7fd0
- https://github.com/libwww-perl/HTTP-Daemon/commit/e84475de51d6fd7b29354a997413472a99db70b2
- https://cwe.mitre.org/data/definitions/444.html
- https://datatracker.ietf.org/doc/html/rfc7230#section-9.5
- http://metacpan.org/release/HTTP-Daemon/
- [debian-lts-announce] 20220930 [SECURITY] [DLA 3127-1] libhttp-daemon-perl security update mailing-list
- FEDORA-2023-c230cc08c4 vendor-advisory
- FEDORA-2023-424636c7cb vendor-advisory
- FEDORA-2023-748e811334 vendor-advisory