Package: dia
Version: 0.97.3+git20160930-9
Tags: patch, security

Dear Maintainer,
the dia package has mailcap entries with quoted %-escapes. That is considered 
unsafe. Proper escaping should be left to the programs using the entry.

This Lintian tag is triggered:
https://lintian.debian.org/tags/quoted-placeholder-in-mailcap-entry.html

See also grave bug #930908, which was recently closed because "a Lintian test 
already exists":
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=930908

I'm using the "security" tag because the affected rules in combination with 
certain mail user agents (or document openers) are the cause of a shell command 
injection vulnerability.

If you need more information let me know.

Thanks,
MNZ
diff -ru a/debian/dia.mime b/debian/dia.mime
--- a/debian/dia.mime	2017-05-23 16:52:27.000000000 +0200
+++ b/debian/dia.mime	2021-04-23 11:02:26.751563201 +0200
@@ -1 +1 @@
-application/x-dia-diagram; dia '%s'; description="DIA diagram"; test=test -n "$DISPLAY"; nametemplate=%s.dia
+application/x-dia-diagram; dia %s; description="DIA diagram"; test=test -n "$DISPLAY"; nametemplate=%s.dia

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