Bug 1179185 (CVE-2019-18835) - VUL-0: CVE-2019-18835: matrix-synapse: mishandling of signature checking on some federation APIs
Summary: VUL-0: CVE-2019-18835: matrix-synapse: mishandling of signature checking on s...
Status: RESOLVED FIXED
Alias: CVE-2019-18835
Product: openSUSE Distribution
Classification: openSUSE
Component: Security (show other bugs)
Version: Leap 15.1
Hardware: Other Other
: P3 - Medium : Normal (vote)
Target Milestone: ---
Assignee: Aleksa Sarai
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/246733/
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Reported: 2020-11-25 09:43 UTC by Alexandros Toptsoglou
Modified: 2021-02-05 02:21 UTC (History)
1 user (show)

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Found By: Security Response Team
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Blocker: ---
Marketing QA Status: ---
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Description Alexandros Toptsoglou 2020-11-25 09:43:53 UTC 
CVE-2019-18835

Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected servers.

Reference:
https://github.com/matrix-org/synapse/pull/6262

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1770333
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-18835
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-18835.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18835
https://github.com/matrix-org/synapse/pull/6262
https://github.com/matrix-org/synapse/releases/tag/v1.5.0
Comment 1 Aleksa Sarai 2021-02-05 02:21:41 UTC 
This has long since been fixed (we now ship a much newer version of Synapse).