Bug 1409556 (CVE-2016-9646) - CVE-2016-9646 ikiwiki: Commit metadata forgery
Summary: CVE-2016-9646 ikiwiki: Commit metadata forgery
Alias: CVE-2016-9646
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1406695 1406696
TreeView+ depends on / blocked
Reported: 2017-01-02 13:20 UTC by Andrej Nemec
Modified: 2019-09-29 14:03 UTC (History)
2 users (show)

Fixed In Version: ikiwiki 3.20161229
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2019-06-08 03:04:58 UTC

Attachments (Terms of Use)

Description Andrej Nemec 2017-01-02 13:20:20 UTC
CGI::FormBuilder->field has a context-dependent API, similar to the CGI->param API that led to Bugzilla's CVE-2014-1572. Parts of ikiwiki incorrectly called this method in list context when a scalar result, which could lead to two relatively minor attacks: 

In the comments plugin, an attacker who was able to post a comment could give it a user-specified author and author-URL even if the wiki configuration did not allow for that, by crafting multiple values to other fields. Also, in the editpage plugin, an attacker who was able to edit a page could potentially forge commit authorship by crafting multiple values for the rcsinfo field.



Comment 1 Andrej Nemec 2017-01-02 13:36:35 UTC
Created ikiwiki tracking bugs for this issue:

Affects: fedora-all [bug 1406695]
Affects: epel-6 [bug 1406696]

Comment 2 Product Security DevOps Team 2019-06-08 03:04:58 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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