[PATCH] Improve DST handling (Bug 23102, Bug 21942, Bug 18018, Bug, 23259, CVE-2011-0536 ).

[Andreas Schwab]

On Jun 07 2018, Carlos O'Donell <carlos@redhat.com> wrote:

> Careful, is_dst () takes as input the start of a DST sequence,
> but that sequence is not validated yet.

You have already validated the prefix by comparing it with the string,
and you only have to check the next character.

> What if name was '$ORIGIN-' but str was '$ORIGIN'?

That would match of course, since `-' is not part of the DST (with the
relaxed rules).

Andreas.

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Andreas Schwab, SUSE Labs, schwab@suse.de
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