High severity · published Jun 13, 2018
CVE-2018-12291
The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility…
7.5
CVSS
1.8%
EPSS
No
On KEV
Description
The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
Synapse · Matrix
before 0.31.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-12291
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-12291
Patch
https://github.com/matrix-org/synapse/pull/3371
Third Party Advisory
https://github.com/matrix-org/synapse/releases/tag/v0.31.1
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