Ubuntu.comUB:CVE-2018-16515CVE-2018-16515
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.004 Low
EPSS
Percentile
74.4%
Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and
possibly have unspecified other impacts by leveraging improper transaction
and event signature validation.
Bugs
Notes
| Author | Note |
|---|---|
| msalvatore | This CVE covers a few problems. To exploit the first, you must be “the administrator of any server in a room”. To exploit the second two requires a “malicious server”. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | matrix-synapse | < 0.24.0+dfsg-1ubuntu0.1~esm1 | UNKNOWN |
References
github.com/matrix-org/synapse/issues/3796
launchpad.net/bugs/cve/CVE-2018-16515
matrix.org/blog/2018/09/05/pre-disclosure-upcoming-critical-security-fix-for-synapse/
matrix.org/blog/2018/09/06/critical-security-update-synapse-0-33-3-1
nvd.nist.gov/vuln/detail/CVE-2018-16515
security-tracker.debian.org/tracker/CVE-2018-16515
ubuntu.com/security/notices/USN-6076-1
www.cve.org/CVERecord?id=CVE-2018-16515
Related
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.004 Low
EPSS
Percentile
74.4%