Skip to main content

Sydent CVE-2019-11842

HIGH
Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CWE-338)
2019-05-09 cve@mitre.org
Information Disclosure Sydent Synapse
7.5
CVSS 3.0 · NVD
Share

Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
CVE Published
May 09, 2019 - 18:29 nvd
HIGH 7.5

DescriptionNVD

An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID.

AnalysisAI

An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-338. An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID. Affected products include: Matrix Sydent, Matrix Synapse. Version information: before 1.0.3.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

More in Sydent

View all
CVE-2021-29430 HIGH
7.5 Apr 15

Sydent is a reference Matrix identity server. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable
CVE-2021-29431 MEDIUM
6.5 Apr 15

Sydent is a reference Matrix identity server. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitab
CVE-2019-11340 MEDIUM
5.9 Apr 19

util/emailutils.py in Matrix Sydent before 1.0.2 mishandles registration restrictions that are based on e-mail domain, i
CVE-2021-29432 MEDIUM
5.7 Apr 15

Sydent is a reference matrix identity server. Rated medium severity (CVSS 5.7), this vulnerability is remotely exploitab
CVE-2023-38686 MEDIUM
5.3 Aug 04

Sydent is an identity server for the Matrix communications protocol. Rated medium severity (CVSS 5.3), this vulnerabilit
CVE-2021-29433 MEDIUM
4.3 Apr 15

Sydent is a reference Matrix identity server. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitab

Same weakness CWE-338 – Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

View all
CVE-2023-36993 CRITICAL POC
9.8
CVE-2019-16303 CRITICAL POC
9.8
CVE-2024-29868 CRITICAL POC
9.1
CVE-2022-35255 CRITICAL POC
9.1
CVE-2025-1796 HIGH POC
8.8
CVE-2023-27791 HIGH POC
8.1
CVE-2019-10754 HIGH POC
8.1
CVE-2019-5440 HIGH POC
8.1

Same technique Information Disclosure

View all
CVE-2013-2251 CRITICAL POC
9.8
CVE-2017-5638 CRITICAL POC
9.8
CVE-2025-24813 CRITICAL POC
9.8
CVE-2015-1701 HIGH POC
7.8
CVE-2017-0147 HIGH POC
7.5
CVE-2014-6324 HIGH POC
8.8
CVE-2023-7028 CRITICAL POC
10.0
CVE-2017-0213 HIGH POC
7.3

Share

CVE-2019-11842 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy