Bug 2213000 (CVE-2023-32683)

Summary:	CVE-2023-32683 matrix-synapse: URL deny list bypass via oEmbed and image URLs when generating previews
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	matrix-synapse 1.85.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-06-07 04:29:32 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:	2213002
Bug Blocks:	2212998

Description Zack Miele 2023-06-06 20:19:33 UTC

CVE-2023-32683 - Low Severity: A discovered oEmbed or image URL can bypass the url_preview_url_blacklist setting potentially allowing server side request forgery or bypassing network policies. Impact is limited to IP addresses allowed by the url_preview_ip_range_blacklist setting (by default this only allows public IPs).

https://github.com/matrix-org/synapse/security/advisories/GHSA-98px-6486-j7qc

Comment 1 Zack Miele 2023-06-06 20:20:09 UTC

Created matrix-synapse tracking bugs for this issue:

Affects: fedora-all [bug 2213002]

Comment 2 Product Security DevOps Team 2023-06-07 04:29:30 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.