Bug 1406693 (CVE-2016-10026)

Summary:	CVE-2016-10026 ikiwiki: Authorization bypass when reverting changes
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ktdreyer, thomas.moschny
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ikiwiki 3.20161219	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:04:50 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1406695, 1406696
Bug Blocks:

Description Andrej Nemec 2016-12-21 09:22:07 UTC

I was discovered that on sites with the git and recentchanges
plugins and the CGI interface enabled, the revert links on the
RecentChanges page could revert changes on a page the logged-in user
cannot legitimately edit, if the change being reverted was made before
the page was renamed from a location that the logged-in user *could*
legitimately edit.

References:

http://seclists.org/oss-sec/2016/q4/717
http://ikiwiki.info/bugs/rcs_revert_can_bypass_authorization_if_affected_files_were_renamed/

Upstream patch:

http://source.ikiwiki.branchable.com/?p=source.git;a=commitdiff;h=9cada49ed6ad24556dbe9861ad5b0a9f526167f9

Comment 1 Andrej Nemec 2016-12-21 09:23:48 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 03:04:50 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.