Bug 1958800 (CVE-2021-21394) - CVE-2021-21394 matrix-synapse: missing input validation may cause excessive use of disk space and memory
Summary: CVE-2021-21394 matrix-synapse: missing input validation may cause excessive u...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-21394
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1958801
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-05-10 07:58 UTC by Marian Rehak
Modified: 2021-05-11 20:34 UTC (History)
2 users (show)

Fixed In Version: matrix-synapse 1.28.0
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Environment:
Last Closed: 2021-05-11 20:34:03 UTC
Embargoed:

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Description Marian Rehak 2021-05-10 07:58:18 UTC 
In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion.

Upstream reference:

https://github.com/matrix-org/synapse/security/advisories/GHSA-w9fg-xffh-p362
Comment 1 Marian Rehak 2021-05-10 07:58:35 UTC 
Created matrix-synapse tracking bugs for this issue:

Affects: fedora-all [bug 1958801]
Comment 2 Product Security DevOps Team 2021-05-11 20:34:03 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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