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CVE-2022-31081

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5520-2
Posted Jul 19, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5520-2 - USN-5520-1 fixed a vulnerability in HTTP-Daemon. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that HTTP-Daemon incorrectly handled certain crafted requests. A remote attacker could possibly use this issue to perform an HTTP Request Smuggling attack.

tags | advisory, remote, web
systems | linux, ubuntu
advisories | CVE-2022-31081
SHA-256 | 79767ea7fd118b9553d3687e6f37d54e7205b3ff5a5efb43f2c04f4d87d3a8d0
Ubuntu Security Notice USN-5520-1
Posted Jul 14, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5520-1 - It was discovered that HTTP-Daemon incorrectly handled certain crafted requests. A remote attacker could possibly use this issue to perform an HTTP Request Smuggling attack.

tags | advisory, remote, web
systems | linux, ubuntu
advisories | CVE-2022-31081
SHA-256 | 6f3d73129a49248edc07f514b13fbb9ee342a58e68004488bc38988c7e60db16
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