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UbuntuUSN-6076-1

HistoryMay 16, 2023 - 12:00 a.m.

Synapse vulnerabilities

2023-05-1600:00:00

ubuntu.com

synapse

ubuntu

vulnerabilities

remote attacks

denial of service

hijack

session

spoofing

user impersonation

cve-2019-18835

cve-2018-12291

cve-2018-10657

cve-2019-11842

cve-2018-12423

cve-2019-5885

cve-2018-16515

python

twisted

7.5 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.9 High

AI Score

Confidence

High

0.006 Low

EPSS

Percentile

79.2%

JSON

Releases

Ubuntu 18.04 ESM

Packages

matrix-synapse - Synapse: Matrix homeserver written in Python/Twisted.

Details

It was discovered that Synapse incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially crafted
input file, a remote attacker could possibly use this issue to cause a
denial of service. (CVE-2019-18835, CVE-2018-12291, CVE-2018-10657)

It was discovered that Synapse incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially crafted
input file, a remote attacker could possibly use this issue to hijack the
session. (CVE-2019-11842, CVE-2018-12423)

It was discovered that Synapse incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially crafted
input file, a remote attacker could possibly use this issue to perform
spoofing or user impersonation. (CVE-2019-5885, CVE-2018-16515)

OSVersionArchitecturePackageVersionFilename
Ubuntu18.04noarchmatrix-synapse< 0.24.0+dfsg-1ubuntu0.1~esm1UNKNOWN
Ubuntu18.04noarchmatrix-synapse< 0.24.0+dfsg-1UNKNOWN