Thank you Dave for all your work and co-ordination with security, the reporter, and communications.

Best regards,
Carl

On 4/15/21 4:06 PM, Dave Fisher wrote:
Hi -

Here is some background on the issue which has apparently existed since about 
OpenOffice.org 2.0 in 2005 or so.

See https://bz.apache.org/ooo/show_bug.cgi?id=49802

Some confusion existed between types of hyperlinks and rather than filtering 
they were all allowed to proceed.

Arrigo restored the code and Carl added some protocol checks:
https://github.com/apache/openoffice/commit/aa358bfc895091e0ee5382ad1d25e5d51261463b

This current code will cause a warning for any http(s) hyperlinks that do not 
have an extension in the “whitelist.”

Some think that we should blanket allow all http(s) hyperlinks so I’ve created 
a PR for that:
https://github.com/apache/openoffice/pull/127

Topics for 4.2.0 include:
(1) A better dialog box for the hyperlink security warning
(2) Implement an option to allow users to choose from 3 levels of hyperlink 
security that is in the code, but not the settings. The levels in the code are 
essentially:
- No Security
- What we have now
- And only help links

All The Best,
Dave


On Apr 15, 2021, at 12:34 PM, Dave Fisher <w...@apache.org> wrote:

Hi -

We are working on releasing 4.1.10 soon do to this security report [1] which 
was announced today.

I’d like to credit Arrigo Marchiori and Carl Marcum for development. Ariel 
Constenla-Haile and Peter Kovacs for our indispensible OpenGrok setup. Matthias 
Seidel, Marcus Lange, Jim Jagielski, and Don Lewis for builds and testing.

All The Best,
Dave

[1] https://positive.security/blog/url-open-rce

On Apr 15, 2021, at 12:18 PM, Dave Fisher <w...@apache.org> wrote:

Severity: moderate

Description:

The project received a report that all versions of Apache OpenOffice through 
4.1.8 can open non-http(s) hyperlinks. The problem has existed since about 2006 
and the issue is also in 4.1.9. If the link is specifically crafted this could 
lead to untrusted code execution. It is always best practice to be careful 
opening documents from unknown and unverified sources. The mitigation in Apache 
OpenOffice 4.1.10 (unreleased) assures that a security warning is displayed 
giving the user the option of continuing to open the hyperlink.

Credit:

Fabian Bräunlein and Lukas Euler of Positive Security



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