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ubuntucveUbuntu.comUB:CVE-2018-12291
HistoryJun 13, 2018 - 12:00 a.m.

CVE-2018-12291

2018-06-1300:00:00
ubuntu.com
ubuntu.com
7

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.002

Percentile

51.7%

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.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchmatrix-synapse< 0.24.0+dfsg-1ubuntu0.1~esm1UNKNOWN
ubuntu24.04noarchmatrix-synapse< anyUNKNOWN

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.002

Percentile

51.7%