CVE-2019-11842

N/A

Published: May 9, 2019 at 05:06 PM UTC

Updated: June 17, 2026 at 02:13 AM UTC

2 products affected across 1 vendorSynapseSydent

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Severity

N/A

Exploit prediction

EPSS 2%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Sydent · Matrix

95%

v < 1.0.3

Affected range stops below 1.0.3, so it looks safe — our inference, not a vendor statement

Synapse · Matrixpypi

95%

v < 0.99.3.1

Affected range stops below 0.99.3.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://matrix.org/blog/2019/05/03/security-updates-sydent-1-0-3-synapse-0-99-3-1-and-riot-android-0-9-0-0-8-99-0-8-28-a/

References (1)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://matrix.org/blog/2019/05/03/security-updates-sydent-1-0-3-synapse-0-99-3-1-and-riot-android-0-9-0-0-8-99-0-8-28-a/

CVSS

5MEDIUM[email protected]

Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-338

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