On Wed, 6 Sep 2023 12:26:44 +0200 Petr Pisar wrote:

> Hello,
> 
> I observer a Unicode check failure in 
> fedora-ci.koji-build.rpminspect.static-analysis test on 
> perl-Prima-1.70-1.fc40 package in Fedora CI
> <https://bodhi.fedoraproject.org/updates/FEDORA-2023-54d3e14b6e>:
> 
>     A forbidden code point, 0x202D, was found in the
>     Prima-1.70/Prima/Drawable/Glyphs.pm source file on line 999 at column 3.
>     This source file is used by perl-Prima.spec.
> 
>     Suggested remedy:
> 
>     The rpminspect configuration file contains a list of forbidden Unicode
>     code points. One was found in the extracted and patched source tree or in
>     one of the text source files in the source RPM. Either remove this code
>     point or discuss the situation with the Product Security Team to determine
>     the correct course of action.
> 
> This is an excerpt from the Glyphs.pm file:
> 
>    995  =for latex-makedoc cut
>    996
>    997     use Prima;
>    998     $::application-> begin_paint;
>    999     $::application-> text_shape_out('אפס123', 0,0);
>   1000
>   1001     123ספא
>   1002
>   1003  =for latex-makedoc cut
> 
> As you can see it's a text from a documentation in POD format. The
> documentation is interleaved with a Perl code.
> 
> I classify the test finding a false positive because Fedora rpminspect policy
> excludes documentation files. Though rpminspect cannot split a documentation
> from a code in a single file.
> 
> I tried to disable the unicode check with a local rpminspect.yaml file, but
> rpminspect insists on security checks not to be overrided be pacakge:
> 
> $ rpminspect -c /usr/share/rpminspect/fedora.yaml -T unicode 
> perl-Prima-1.70-1.fc40.src.rpm
> rpminspect: *** ignoring 'unicode' section in /tmp/rpminspect.yaml; only 
> allowed in system-wide configuration
> 
> 
> My questions:
> 
> Do you agree it's a false positve?
> Can you sanction ammending Fedora rpminspct policy with:
> 
>       unicode:
>               ignore:
>                       # 0x202D character used on purpose to demonstrate RLE in
>                       # a documentation.
>                       - Prima-*/Prima/Drawable/Glyphs.pm

Cases like this are handled by adding suppression rules define in the
security directory of the rpminspect-data package:

https://github.com/rpminspect/rpminspect-data-fedora/tree/main/security

You can find few rules for the unicode inspection there.  Open a PR to
add new entries.

-- 
Tomas Hoger / Red Hat Product Security
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