Date: Sat, 29 Apr 2023 12:04:07 +0200 From: Stig Palmquist <stig@...g.io> To: oss-security@...ts.openwall.com Subject: Re: Perl's HTTP::Tiny has insecure TLS cert default, affecting CPAN.pm and other modules - CVE-2023-31484 for CPAN.pm - CVE-2023-31485 for GitLab::API::v4 - CVE-2023-31486 for HTTP::Tiny On 2023-04-18 17:46, Stig Palmquist wrote: > HTTP::Tiny v0.082, a Perl core module since v5.13.9 and available > standalone on CPAN, does not verify TLS certs by default. Users must > opt-in with the verify_SSL=>1 flag to verify certs when using HTTPS. > > We grepped trough CPAN to find distributions using HTTP::Tiny that > didn't specify cert verification behaviour, possibly exposing users to > mitm attacks. Here are some examples with patches: > > - CPAN.pm v2.34 downloads and executes code from https://cpan.org > without verifying server certs. Fixed in v2.35-TRIAL. > https://github.com/andk/cpanpm/commit/9c98370287f4e709924aee7c58ef21c85289a7f0 > > - GitLab::API::v4 v0.26 exposes API secrets to a network attacker. > https://github.com/bluefeet/GitLab-API-v4/pull/57 > > - Finance::Robinhood v0.21 is maybe exposing API secrets and financial > information to a network attacker. > https://github.com/sanko/Finance-Robinhood/pull/6 > > - Paws (aws-sdk-perl) v0.44 is maybe exposing API secrets to a network > attacker. > https://github.com/pplu/aws-sdk-perl/pull/426 > > - CloudHealth::API v0.01 is maybe exposing API secrets to a network > attacker. > https://github.com/pplu/cloudhealth-api-perl/pull/2 > > ... and more. We have generated a list of over 300 potentially affected > CPAN distributions. > > More info in our blog post: > https://blog.hackeriet.no/perl-http-tiny-insecure-tls-default-affects-cpan-modules/ > > -- > Stig Palmquist <stig@...g.io>
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