HTTP Request Smuggling Affecting perl-HTTP-Daemon package, versions <0:6.16-1.amzn2023


Severity

Recommended
low

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.35% (84th percentile)

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  • Snyk IDSNYK-AMZN2023-PERLHTTPDAEMON-5788850
  • published20 Jul 2023
  • disclosed27 Jun 2022

Introduced: 27 Jun 2022

CVE-2022-31081  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perl-HTTP-Daemon to version 0:6.16-1.amzn2023 or higher.
This issue was patched in ALAS2023-2023-247.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perl-HTTP-Daemon package and not the perl-HTTP-Daemon package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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-&gt;get_request() one could inspect the returned HTTP::Request object. Querying the 'Content-Length' (my $cl = $rqst-&gt;header(&#39;Content-Length&#39;)) 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.

CVSS Base Scores

version 3.1