Re: A new class of security vulns?

[cve-assign () mitre org]

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> https://fedorahosted.org/freeipa/ticket/5153

> assuming there are no actual terminal escape sequences allowed, but just
> backspace characters/etc

> there is an integrity impact (not a very big one mind you)

In this type of situation, the author of the software can choose to
characterize the behavior as a vulnerability, based on their viewpoint
about what type of "integrity" was intended.

In this case, the report says "non-printable characters aren't check
in every case of user data" and "need more string checks for
non-printable characters." That might mean that character-set
restrictions were an intentional protection mechanism, implemented
correctly elsewhere in the product, and the author can definitely have
a viewpoint that the incomplete protection mechanism requires a CVE
ID. If there previously were no character-set restrictions at all, but
the author believes that the original design goal was to have the
user-entered name directly visible to the admin, then again the author
can state that a CVE ID is required, We, of course, discourage anyone
from asserting an original design goal when what they are really doing
is adding an entirely new security feature.

If this type of claim of a vulnerability finding is not originated or
confirmed by the author, it becomes difficult to argue that a CVE ID
is required. Maybe the product was actually intended to store
non-alphabetic names (including the \10\10\10Doe types of names in
5153) in order to support a wide range of personal-identity choices,
perhaps even the symbol of The Artist Formerly Known As Prince.

- -- 
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
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