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Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>
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Kévin Commaille 2024-05-14 12:39:11 +02:00
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content/client-server-api/modules/instant_messaging.md
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@ -430,12 +430,17 @@ basic LaTeX2e maths commands and the TeX maths commands, with the possible
exception of commands that could be security risks.
{{% boxes/warning %}}
Certain commands, such as [those that can create macros](https://katex.org/docs/supported#macros),
In general, LaTeX places a heavy burden on client authors to ensure that it is
processed safely. Certain commands, such as [those that can create macros](https://katex.org/docs/supported#macros),
are potentially dangerous. Clients should either decline to process those
commands, or should take care to ensure that they are handled in safe ways (such
as by limiting recursion). In general, LaTeX commands should be filtered by
allowing known-good commands rather than forbidding known-bad commands. Some
LaTeX libraries may have options for doing this.
allowing known-good commands rather than forbidding known-bad commands.
Therefore, clients should not render mathematics by calling a LaTeX compiler
without proper sandboxing, as those executables were not written to handle
untrusted input. Some LaTeX rendering libraries are better suited for that by
allowing only a subset of LaTeX and enforcing recursion limits.
{{% /boxes/warning %}}
#### Server behaviour