Vulnerability Name:

CVE-2018-12291 (CCN-144787)

Assigned:2018-06-08
Published:2018-06-08
Updated:2019-10-03
Summary: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 v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
4.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2018-12291

Source: XF
Type: UNKNOWN
matrix-synapse-cve201812291-weak-security(144787)

Source: CCN
Type: Synapse GIT Repository
Fix event filtering in get_missing_events handler #3371

Source: CONFIRM
Type: Patch, Third Party Advisory
https://github.com/matrix-org/synapse/pull/3371

Source: CONFIRM
Type: Third Party Advisory
https://github.com/matrix-org/synapse/releases/tag/v0.31.1

Vulnerable Configuration:Configuration 1:
  • cpe:/a:matrix:synapse:*:*:*:*:*:*:*:* (Version < 0.31.1)

    • Configuration CCN 1:
  • cpe:/a:matrix:synapse:0.31.0:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:201812291
    V
    		CVE-2018-12291
    2022-06-30
    oval:org.opensuse.security:def:112972
    P
    		matrix-synapse-1.43.0-1.1 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:106421
    P
    		matrix-synapse-1.43.0-1.1 on GA media (Moderate)
    2021-10-01
    oval:com.ubuntu.artful:def:201812291000
    V
    		CVE-2018-12291 on Ubuntu 17.10 (artful) - medium.
    2018-06-13
    oval:com.ubuntu.cosmic:def:2018122910000000
    V
    		CVE-2018-12291 on Ubuntu 18.10 (cosmic) - medium.
    2018-06-13
    oval:com.ubuntu.bionic:def:201812291000
    V
    		CVE-2018-12291 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-06-13
    oval:com.ubuntu.bionic:def:2018122910000000
    V
    		CVE-2018-12291 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-06-13
    oval:com.ubuntu.cosmic:def:201812291000
    V
    		CVE-2018-12291 on Ubuntu 18.10 (cosmic) - medium.
    2018-06-13
    oval:com.ubuntu.disco:def:2018122910000000
    V
    		CVE-2018-12291 on Ubuntu 19.04 (disco) - medium.
    2018-06-13
    BACK
    matrix synapse *
    matrix synapse 0.31.0 -