Veracode Vulnerability DatabaseVERACODE:38238Denial Of Service (DoS)
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
31.0%
matrix_synapse is vulnerable to denial of service (DoS). The library does not properly limit the connection time while attempting to generate URL previews for media stream URLs when the URL preview functionality is enabled. The connections are terminated only after max_spider_size bytes have been downloaded, which may cause excessive traffic resulting in denial of service conditions.
| CPE | Name | Operator | Version |
|---|---|---|---|
| matrix-synapse | le | 1.52.0 | |
| matrix-synapse:sid | eq | 1.23.0-1 | |
| matrix-synapse | le | 1.52.0 | |
| matrix-synapse:sid | eq | 1.23.0-1 |
References
github.com/matrix-org/synapse/commit/02d99f044efbed3c347c19a430d56cfbb41c87a7
github.com/matrix-org/synapse/commit/337f38cac38bc57bc6a3cc8b319e3079c60c4549
github.com/matrix-org/synapse/issues/8302
github.com/matrix-org/synapse/pull/11784
github.com/matrix-org/synapse/pull/11936
github.com/matrix-org/synapse/releases/tag/v1.52.0
github.com/matrix-org/synapse/releases/tag/v1.53.0
github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h
Related
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
31.0%