oss-security - Is CVE-2024-30203 bogus? (Emacs)

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Date: Mon, 08 Apr 2024 15:05:21 +0800
From: Sean Whitton <spwhitton@...hitton.name>
To: Ihor Radchenko <yantar92@...teo.net>
Cc: emacs@...kages.debian.org, emacs-devel@....org,
 oss-security@...ts.openwall.com
Subject: Is CVE-2024-30203 bogus? (Emacs)

Hello Ihor,

The description for CVE-2024-30203 is

    In Emacs before 29.3, Gnus treats inline MIME contents as trusted.

and for CVE-2024-30204 is

    In Emacs before 29.3, LaTeX preview is enabled by default for e-mail
    attachments.

but I think these commits

* ccc188fcf98..: Ihor Radchenko 2024-02-20 * lisp/files.el
  (untrusted-content): New variable.
* 937b9042ad7..: Ihor Radchenko 2024-02-20 * lisp/gnus/mm-view.el
  (mm-display-inline-fontify): Mark contents untrusted.
* 6f9ea396f49..: Ihor Radchenko 2024-02-20 org-latex-preview: Add
  protection when `untrusted-content' is non-nil

fix only a single problem, right?  But we have two CVEs.

It seems to me that either

- CVE-2024-30203 is just bogus, based on a misunderstanding by the CVEs
  assigner of exactly what the vulnerabilities were

- CVE-2024-30203 is legitimate, and we have only fixed one possible way
  in which Gnus treats inline MIME content as trusted.

I think it's the first one -- can you confirm?

Thanks.

-- 
Sean Whitton

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