oss-sec mailing list archives
Re: Python standard library defaults to insecure TLS for mail protocols
From: Stuart D Gathman <stuart () gathman org>
Date: Thu, 1 Feb 2024 22:52:54 -0500 (EST)
On Thu, 1 Feb 2024, Alex Gaynor wrote:
I'm the original author of PEP 476, which made certificate verification on by default for TLS. In 2014 I scoped it to HTTPS-only
By default, the mail protocol functions in Python's standard library do not validate certificates for TLS connections. The API is surprising and unintuitive. This is not a new issue, but I was surprised to learn about it. Therefore, I'm sharing it here so more people know.
The API is the key issue for me. Cabal CAs can forge certs anytime they want anyway. Ideally, the API would support PKCS#11, but more importantly, IMO, there should be a simplified API where it defaults to "trust the CABAL", but there is a callback to "veto" certs. E.g. "only trust CA-X for these domains" would be something easy to understand and implement in a callback.
Current thread:
- Python standard library defaults to insecure TLS for mail protocols Hanno Böck (Feb 01)
- Re: Python standard library defaults to insecure TLS for mail protocols nightmare . yeah27 (Feb 01)
- Re: Re: Python standard library defaults to insecure TLS for mail protocols Hanno Böck (Feb 01)
- Re: Python standard library defaults to insecure TLS for mail protocols Steffen Nurpmeso (Feb 02)
- Re: Python standard library defaults to insecure TLS for mail protocols Kurt H Maier (Feb 02)
- Re: Python standard library defaults to insecure TLS for mail protocols Steffen Nurpmeso (Feb 02)
- Re: Re: Python standard library defaults to insecure TLS for mail protocols Hanno Böck (Feb 01)
- Re: Python standard library defaults to insecure TLS for mail protocols nightmare . yeah27 (Feb 02)
- Re: Python standard library defaults to insecure TLS for mail protocols nightmare . yeah27 (Feb 01)
- Re: Re: Python standard library defaults to insecure TLS for mail protocols Daniel Kahn Gillmor (Feb 02)
- Re: Python standard library defaults to insecure TLS for mail protocols Jeremy Stanley (Feb 01)
- Re: Python standard library defaults to insecure TLS for mail protocols Stuart D Gathman (Feb 02)